Junkyard/h-t. You can get them new from honda if you pay out the nose. Check with the person you buy the tranny from. If they went b/h/k series they'll have them for you.
Here's where I got everything I needed for my conversion:
*HF transmission - a friend's back yard (try Honda-Tech or a local honda board...I have ImportAtlanta.com)
*Rebuild parts for HF tranny - www.hondaautomotiveparts.com
*Pedals - Junkyard
*Flywheel - I had one, try Honda-Tech or ImportAtlanta equivalent
*Clutch - eBay (less than $100)
*Shift Linkage - Junkyard
*ECU - Honda-Tech
*Mounts - Honda-Tech
*Clutch Cable - Autozone
Would it be easier to conver to mpfi and obd2 if i had a harness from a mpfi crx? Or is it the same regardless?
You want obd1, not obd2.
It's best to stick with your existing harness. Not only is it cheaper, but the MPFI wiring only takes like 30 minutes if you just follow the directions and know how to do a little wiring.