i e-mailed moroso and asked them the same question. they recommended i use #47205 fronts. my car is an iron headed sbc with aluminum intake, lift off glass hood, no wipers, no heat or a/c, manual steering, electric w/p....i sent them any information i could to make sure they had an idea what i have. the best thing to do would be to weight your front end, but if you can't, i'd get in touch with them.