New I/C piping, FMIC, BOV, throttle cable & manifold. The battery can stay if you route the I/C piping (cold side) like that of a 1J. The stock TB can be used also if you wish, but that would limit the gains in performance.
All in all, it's a good chunk of coin. I think it was Idealsupra that said that it can be done for a few hundred bucks, but if you're going the high end route, look to shell out $1500-$2000 just for the parts to do the FFI conversion. $150-$250ish for aluminum I/C piping & silicon elbows, $200 for a quality BOV, $200+ for an Ebay FMIC & another $25 for the hardware to mount it, $135ish for a Q45 TB, $550-$800 for RR FFI (long & short runner, respectively), some more coin for the throttle cable (ask Ron for the exact since he doesn't specifically price them in his thread), $20 for an alternator belt & throw in another $150 for the battery relocation kit & other misc parts.
The above runs about $1850. Adds up quick, but if you shop around it can effect your price (I bought a Tail BOV for $200 shipped, so your price could go up too). There are some things that I didn't address like the coolant oveflow bottle being moved, cost of welding the I/C piping, shipping charges & paypal charges. Yep, two bills, easily.....
On the plus side of course is the improved performance, easier maintainance and just a kick ass appearance. :biglaugh: