Converting N/A to Turbo

Hi im new to the MR2. I recently had a MKIII Supra, but that died from a BHG. I still want to stay with Toyota, so im going to buy a 91 MR2. It has 60K Miles and is only 5000. Perfect i think. I cant find any turbo ones though, so i have to settle for this NA. Well how difficult is it to swap of the NA (5SFE i think) for the 3sGTE? Is there any sites with a guide for this? Where can i find one also? Do i need the 3S Tranny or is the 5S sufficient? Im not new to engine swapping, so i know a bit, like the basics. How many versions of the 3S are there, and which one should i buy? streetimports.com sells a JDM 3SGTE for $1600, $2100 with tranny. Im sure ill have to get a turbo ECU. Thanks alot, im just trying to learn as much as i possilby can about this car before i buy it. Thank again.

I would like a guide also about this if possible. Any help appreciated.

If you havent bought the car yet, in all honesty, DONT. I would wait until you can get a good turbo car. Its a serious PITA to do the swap and you end up spending a ton more. I know some people selling turbo 2s.