F. Side windows are permitted. Quarter windows are allowed and NACA ducts may be installed in them as well. Heights will be taken with driver in car in normal sitting position. Wings, or front spoilers allowed. H. No letters or three digit numbers.
Track reserves the right to reassign numbers to avoid duplication.
Scoring will be by number only. All others will be on a first come basis. Numbers only will be assigned, no letters, such as 50X , will be available or issued, no exceptions during regular season . I. Air cleaners must remain under the hood. Only paper air cleaner elements may be used.