<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>                   
<PERIOD-TYPE>                   12-MOS                   6-MOS                  9-MOS                   12-MOS                
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997             DEC-31-1997             DEC-31-1997 
<PERIOD-START>                             JAN-01-1996             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               DEC-31-1996             JUN-29-1997             SEP-28-1997             DEC-31-1997
<CASH>                                          23,398                   3,020                   9,080                  45,439
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                  128,625                 141,395                 119,707                 103,302
<ALLOWANCES>                                     5,623                   5,531                   4,351                   4,409
<INVENTORY>                                    149,419                 151,405                 142,370                 155,534
<CURRENT-ASSETS>                               319,758                 316,649                 278,884                 320,020
<PP&E>                                         332,047                 347,987                 336,244                 340,695
<DEPRECIATION>                                  40,961                  61,113                  72,026                  65,205
<TOTAL-ASSETS>                               1,768,845               1,760,292               1,696,103               1,710,556
<CURRENT-LIABILITIES>                          308,590                 302,025                 288,796                 257,533
<BONDS>                                      1,010,962                 965,175                 883,387                 924,805
<PREFERRED-MANDATORY>                           54,900                  57,398                  58,690                  60,010
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                         1,000                   1,000                   1,000                   1,000
<OTHER-SE>                                     217,815                 245,253                 265,368                 264,660
<TOTAL-LIABILITY-AND-EQUITY>                 1,768,845               1,760,292               1,696,103               1,710,556
<SALES>                                      1,106,812                 642,985                 951,990               1,258,189
<TOTAL-REVENUES>                             1,106,812                 642,985                 951,990               1,258,189
<CGS>                                          807,524                 449,242                 665,059                 881,214
<TOTAL-COSTS>                                  807,524                 449,242                 665,059                 881,214
<OTHER-EXPENSES>                                79,993                  37,946                  47,357                  77,122
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                              41,877                  16,838                  25,874                  30,988
<INCOME-PRETAX>                                 55,885                  65,515                  95,776                 118,220
<INCOME-TAX>                                    30,259                  27,414                  36,474                  46,267
<INCOME-CONTINUING>                             25,626                  38,101                  59,302                  71,953
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                  12,255
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                    25,626                  38,101                  59,302                  59,698
<EPS-PRIMARY>                                      .21                     .36                     .56                     .55
<EPS-DILUTED>                                      .21                     .36                     .56                     .55 
<FN>
<F1>FINANCIAL DATA SCHEDULES PREVIOUSLY FILED FOR PERIODS ENDED JUN-29-1997 AND
SEP-28-1997 AND FOR PRIOR TWO FISCAL YEARS ENDED DEC-31-1997 AND DEC-31-1996 ARE
BEING AMENDED FOR RECLASSIFICATION OF CUSTOMER FUNDED R&D FROM OTHER-EXPENSES TO
CGS.
</FN>
        

</TABLE>