Its not worth it to modify the SOHC 6g72, i use to own an 00 eclipse GT and it was a bitch to do anything on it and after market is really pricey. PLUS its still FWD! And yours is an automatic!
You should either pony up the cash for the motor/driveline swap or say fuck it and leave the car alone and buy a good platform to build on.
Oh and talking about Evo's like that...people have been shot for less 'round these parts.
oh and body kits are
GAY!
Here is links to where you should be looking if your keeping your motor and going FI:
www.Tearstone.com
www.Rippmods.com
www.Roadraceengineering.com