Don't waste any time trying to find a SA 85 efi! Good luck, they are rare and usually have high prices. I actually had an 85 efi truck(efi only on the sr5 models). You also don't save much money over a SAS anyways, especially if you plan on building up the truck. If you want a trail rig, you can find lots of good deals on already built rigs, there are some 4runners and tricks on pirate4x4.com. If you want more of a daily driver/weekend warrior for moderate trails, then IFS might be ok with you. You can always SAS later. Just my .02