[Dennis Kalma]

Took a bit of time this afternoon and scanned in the cross sections (out of Frere's book) of the 5 speed and 6 speed G50 transmissions and overlaid them in Photoshop.

Given that one is prepared to remove the rear mounting lug (the big doughnut on the nose of the transmission) and the associated aluminium casting, looks like the difference in length of the two transmissions is about 63mm +/- 2mm or so (about 2 1/2 inches). I wonder if there is enough room in the '89 for this extra length...Turbocabmike measured about 2 inches clearance?

Only worry would be the flattened torsion tube...any insight from anyone? I think that the changeover to the G50 resulted in a flattened torsion tube with nothing in teh section at that point, seems like a bit more denting to clear a 6 speed ought to be do-able.

Other thought is to shorten the bell housing in the same manner as people have done to fit a G50 into the pre-87 cars....all it would need would be an inch or so to give plenty of clearance.

BTW, thanks to all who have responded, this is great stuff!!