From Sofast to Soslow

Here is the story. I was getting in my car yesterday (88 Prelude Si 5 speed) to go to the garage. I started my car and a loud clanky noise was coming from the underneath the hood. The first thing I thought was my hood prop fell again and was rubbing on a pully. So I pop the hood look down and the hood prop was where it was supposed to be. I looked at the common stuff to see if the noise was coming from them but nope! The noise is definitly coming from the block. So I will definitly be swaping a motor here in the next few weeks.

What I need to know all information on swaps that you all may have. The only swap that seems practical right now is a Jdm b20a. The h22 is common but all ive heard is problems when swaping into a 3rd gen. Please help me out with all of your ideas and info

I'm not sure how easy it is, or how light the 3rd gen is compared to the later gens, but someone on here has a 3rd gen with a B18. You might wanna look into that, cause those are common, good engines.