I just picked up a 91 hatch, and the motor thats in it has been messed around with and im lookin to just do a quick replacement, my question is what are my motor options as far as block and head go, while keeping my intake and exahst manifolds and keepin the factory wiring and ecu.
the thought is i want to keep this as quick and simple as possible and do more later, any help would be apretiated, sorry if this a repeat topic, i wasnt sure what to search for.

thanks.

 

https://honda-tech.com/zerothread/1508680 Exactly the same motor that is the car now.

https://honda-tech.com/zerothread/2086185 <---Please read this