STEVO22

hey there. Ive just recently bought a 75 sr coupe to play around with. I'm thinking about putting a blacktop 4age motor in it. the car already has a t50 in it and i was just woundering how easy would this be to do?? i have a link plus that i was going to run with it and i know the box will bolt up but whats the story with the engine mounts and what will i have to change?? cheers