are accel coils any good on z.will it help the performance out any.what are some good performance up grades under $1500.i have a header and 2 1/2" exhaust.and cold air inducstion.how much does a biger t/b cost.i have a stock 4 speed and a stock 5 speed tranny which one is better for drag raceing.what would be a good gear for the rear end for drag raceing.thanks a head time