Quote:

call the after market company you want to buy from. they will set you up.



Partially true. Depending on what company you call you might end up with something very wrong.

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.