Hey guys theres a 67 coupe up my street for 4,000 all orginial but in great condition. Its got a straight 6 and 3 speed manual...I really would like to buy it but i need to know if i can drop something with some true muscle in there like a ford racing 392 crate motor...I should be able to do that right???...Im thinkin if the 428 could fit in it why not a 392.