Front suspension is not the same as 74 and later. the crossmember and steering rack is different, the engine mounts are different. The engine compartment from 74 and later is longer and even the tunnel is larger, that's why you can drop in a 302 in a 74 and later Pinto and have to do some body work to get one in a 71-73. I think you would be wasting a lot of time trying to replace a front clip.
Joe