You would need to do lots of modifications with any swap.
You need the transmission to match the engine.
You need the engine and transmission mounts.
You need a new ECU ccomputer chip and wiring harness.
Some new interior trim pieces where the shifter is.
Just put one of the engines shown in that website I gave you in the other question you asked about The Supra and Nissan Engines in the RX-7.