Blew piston rod on cylinder 3 a number of years back and getting around to doing an engine swap. Found a 91 CRX that had its original engine swapped some years back (engine has 145K miles on it) to a ZC DOHC. What might be the major issues I need to look for? I figure it will drop right in, tranny and all. Does the ECU need to be swapped? I plan to pull the wiring harness out of the CRX and use that. Any ideas what I do for the differences in AC mount? Both AC units are good and I recall the DX has having been in decent running order some years ago. Of course it could have gone south by now having not been used in 5 years. The crx AC was replaced about 2 years ago (before accident) and I believe it still works. To get it into DX though it has to be discharged. Any ideas on how much folks charge to vacuum and recharge a system? Thanks much for any assistance.