<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000

<S>                           <C>                   <C>                   <C>
<PERIOD-TYPE>                 3-MOS                 6-MOS                 9-MOS
<FISCAL-YEAR-END>                     DEC-31-1997           DEC-31-1997           DEC-31-1997
<PERIOD-START>                        JAN-01-1997           JAN-01-1997           JAN-01-1997
<PERIOD-END>                          MAR-31-1997           JUN-30-1997           SEP-30-1997
<CASH>                                    190,728               257,079               271,112
<SECURITIES>                               14,793                14,773                14,818
<RECEIVABLES>                             138,927               126,692               111,055
<ALLOWANCES>                                1,479                 1,496                 1,593
<INVENTORY>                               339,826               289,588               335,216
<CURRENT-ASSETS>                          699,451               702,804               748,438
<PP&E>                                    764,711               770,446               782,752
<DEPRECIATION>                            191,313               199,380               209,987
<TOTAL-ASSETS>                          1,334,714             1,331,562             1,375,932
<CURRENT-LIABILITIES>                     378,265               333,226               326,646
<BONDS>                                   416,824               416,065               415,296
<PREFERRED-MANDATORY>                           0                     0                     0
<PREFERRED>                                     0                     0                     0
<COMMON>                                        0                     0                     0
<OTHER-SE>                                496,735               539,291               590,500
<TOTAL-LIABILITY-AND-EQUITY>            1,334,714             1,331,562             1,375,932
<SALES>                                   997,435             2,168,611             3,289,562
<TOTAL-REVENUES>                        1,002,928             2,179,463             3,306,721
<CGS>                                     893,630             1,874,666             2,791,363
<TOTAL-COSTS>                           1,000,978             2,086,217             3,110,364
<OTHER-EXPENSES>                           13,799                30,662                48,657
<LOSS-PROVISION>                                0                     0                     0
<INTEREST-EXPENSE>                         10,641                21,397                32,281
<INCOME-PRETAX>                          (37,394)                12,162                68,026
<INCOME-TAX>                                    0                 7,000                11,697
<INCOME-CONTINUING>                      (37,394)                 5,162                56,329
<DISCONTINUED>                                  0                     0                     0
<EXTRAORDINARY>                                 0                     0                     0
<CHANGES>                                       0                     0                     0
<NET-INCOME>                             (37,394)                 5,162                56,329
<EPS-PRIMARY>                                   0                     0                     0
<EPS-DILUTED>                                   0                     0                     0


</TABLE>