I'm getting ready to drop a new motor in my 72 and after all my searching its seems that the Ford Racing 351, 250 hp is about the cheapest ways to go. I know I will have to change out the oil pan that comes on it, but what else will have to be changed? Will the water pump and flywheel that come on it work? My Bronco has a C4 in it. Also for the guys that have put this engine in there Bronco how do you like it so far? I've been looking at several places on the web that sell the engine, but is there any places that might have it the cheapest you would recommend? Thanks for all the help, I'm in the middle of a frame off restoration and couldn't of done it without the help from all the info on this site! Thanks again.