I did it, it's not too bad...bring a friend or a really good floor jack, Email me and I'll send the articles i used. I'm running a 71 with an 82 2.8, 5 spd and 3.90 rear. Electronis ign (GM HEI), 2.25 exhaust w/Flowmaster, K&N's. The car was an A/T. Unbelievable difference from what it was, the best part is I have maybe 3 grand in it... and it's tight. Crustangs aint sh#@.