cheapest bet instead of a MII is a yota clip. get a straight yota clip and build a 2x3 frame off of it. you can use rx7, 300zx, supra, t-bird, etc. for an irs. guy here in newnan built an s10 w/ a rx7 irs.
im building a clip for forrests truck that uses the toyota hardware (spindles, brakes, etc) and rack and pinion steering, might jig it if it is easily adaptable.