Fb3s engine swap?

i have a 1985 rx7 fb3s and I'm swaping the 12a engine and the auto tranny into a 13b turbo and manual tranny and I wanted to kno which engines will fit right in without mods to the car besides the conversion from auto to man.

all you have to do is use a 12a or GSL SE 13b front cover, put it on the TII engine, and use the stock mounts. you'll have to drill and tap a hole on either the oil pan or front cover for the turbo's oil return line. your transmission mounts will must be custom.