The Ls engine would be from a 2nd gen teg. The shiftlinkage from the teg might need to be cut a few inches and rewelded, but that's it. And about 17's... I had em on my sol for a while, and they sucked. They grab every bump in the road, and pull you around it the road is rutted at all. And if you lower it a few inches, 15-16's look really nice... Plus, if your roads are like they are here, you'd want a little more rubber to protect your rims...