I am putting a 351c in my 87 mj and it's really tight. Have to make my own mounts and trim some fire wall for clearance. I wanted a 351c just to be differant I say go with what fits your personality.
You will have more fun doing it with something you want to rather than something you don't. A chevy is easy to get parts for but to me it seems alot of people use them thats why I am going ford.
Go with what you want take your time and have fun doing it I say.