okay the new edelbrock heads claim to give 18 more hp than the old ones, the old ones gave 78 and the upper and lower intakes are said to give 37, thats 133HP. would they really give that much power to a car with intake and exhaust???? i have a b303, 373s with shift kit and full exhaust, if i get the upper and lower intakes and heads with a 70mm TB what would i be running? shouldn't i see 12s????