all A-variants use the same mounting points. im not sure what you mean by 4V, im gonna guess that was a typo and you meant 8. in that case, its the 4a-c engine, and yes the tranny bolts up, they all use the same block design.
id go with a 20V 4age or a 4agze (supercharged). both are front wheel drive, but all you have to do is route some some lines (which is the easiest part really) and mate it to the ae86 rwd tranny (t50).
first time ive heard of somebody swapping in a 4ag-xx engine into a rx7, not the first time ive heard of soembody swapping out a wankel though
. a 20V (165 hp at the fly, n/a screamer, with itb's) or a AE101 (chassis code) MAP 4agze (about 170ish hp, with a buncha low end torque from the s/c) should motor along pretty well in a FB id imagine.
