Its pretty simple depending on if you go carb or efi, I put a carb 351 cleavland in my 92 notch, You can use the 302 motor mounts but probably will have issues with the hood, and youll have to get the oil pan swap to convert it to a rear sump pickup other that those things its pretty simple, also it will depend on what year the 351 is and what kinda trans you got, im using a c4 and every thing bolts up and fits. good luck its a great idea to put a 351 in a fox