Needing to replace my 89 prelude b20a5 engine

[Honor1812]

I took the head off had a bad bent valve, i was told there was a new belt no time it snapped so resulting in a bent valve and all four pistons are seated. Instead messing with it cause of the high miles 250-300 on it was wanting to see what motor options if any with out custom work being done. I read it is a pain this gen, if any one knows where i could get the same engine that would be great also. JDM i found http://www.jdmquality.com/b20a-dohc-engine-only-88-91.htmlonly one i found close. Im new to working on honda mostly work on trucks so bare with me if i seem dumb about them.