So, carrying on with what I did, I made the spacer shown above. I then used some 75mm bolts I got from a set of cylinder heads I had. They are rocker arm retaining bolts.
They are the perfect length.

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