Frank Wyatt recently showed how he got his to fit simply by redrilling a screw hole on the left side, by the stay.
It's in the WHYDTYTT thread and he has the unusual tan (saddle?) interior.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.