I take it you saw the ones for the coil spring set-up? I wondered why that wouldn't work, and that is what I was told. Now having been involved in quite a few V-8 S-10 conversions with rear 4 link conversion set ups, and a couple of Mustang IFS conversions, that makes no sense to me. You would have to lower your rear spring hangar whatever the distance is of the body lift spacers, but that seems very do-able. My .02.

89 SWB, V-6 5SPD, OME Shocks, 16.5X37's, 2"BL, SR axle, Gen2 brakes, Lincoln w/Superwinch