i did a complete big block swap in 1996 with a 81 cougar xr7 the swap was very easy. a ford 460 oil pan from the f350 with oil pump and pickup i used the ford motor mount swap kit with kaufmann 460 street header kit. you do not have to change the steering shaft or front springs if your car came with a v8. with a c6 trans i had to shorten my drive shaft 1 inch still using the 7.5 rear axle. if you change to a nine inch rear axle it is best to get a custom shaft built. i bought a new radiator for a 1971 mustang 429. it fits like a glove. the only problem you will run in to is that you cant run a mechanical fan. you will have to run dual electric fans. but you will have to run one pusher and one puller because of the closeness of the pump to the radiator. dont try to run manual steering. i ran pump from a 70 t bird and got the hoses custom made. you will not be able to run a factory kick down for the trans. i put in an after market shifter and lost the column shift. if you have any questions my email is
tunnel45@mts.net i still have the car today 12 years later