Motor options for an 86 Prelude

This is my first post on this site and to be very honest it feels really weird since I am a Mustang guy. Dont hold that against me please.

Anyway I know jack about Hondas or imports except how to bolt crap on. I can swap motors and rearends out or mustangs everyday and never break a sweet.

I am buying a Honda as a daily driver. Its an 86 Prelude Si 5 speed with 200k + miles on it. I am buying it for like $500 and everything else on the car is great. I am trying to figure a game plan in case some thing blows and I need a motor.

What are my options and please go slow because when you guys start throwing engine numbers at me I am lost.

Any help is appreciated and if you can point me to websites that can help show me whats involved that would be awesome.

Thanks,
Steve