hey guys, i'm working on 1966 mustang with an original 289-4 speed toploader configuration. The 289 that i have currently in the car is in too poor of condition to drive. It's burning oil and misfiring. There is a 351 for sale in my town and it seems to be a good deal. I just don't know how everything will line up with what i've got as far as motor mounts, transmission etc. The 351 is currently in a 1977 ford car (not a mustang) Anyone have any suggestions/advice? Thanks!