I ran IFS in my 86 4Runner, the only question I have is can you stay in your seat while you constantly are 3 wheeling. If you can here's what I did to enhance my wheel-ability. Downey/Rancho torsion bar and upper a-arm. Then get the flat bump stops, a custom fabbed spacer between the upper a-arm and mounting bracket behind the backing plate. One piece of steel in the triangle shape of the mount with the three holes lined up and grade 8 nuts and bolts. That was it for the front, you could just do the spacer on the stock a-arm too it will give you more travel and lift. On the rear a 2 inch shackle and Downey's long leaf add-a-leaf which makes it to where you can toss that flat load leaf from Toyota. In the diff's I put 4.88's and lockers front and rear. Took that thing everywhere. I miss that truck.
