The NHRA rules for TA/FC for next year have been amended to include injected nitro cars: minimum weight is 2,400 lbs., maximum engine displacement is 456 cid, maximum nitro percentage at sea-level events is 85% with 95% at high altitude events (i.e. Denver), no electro/pneumatic clutch management systems or electronic fuel control systems and no transmission; direct drive only. Body style can be 1969 or later. Otherwise, all other TA/FC rules apply.