THATS MY 855.
Pictures are from the B Bodies FB page.
Easy install, same crossmember and drive shaft, the new speedo cable is routed from right side over the trans, plenty of room between trans and tunnel.
It's in my 69 GTX and I have 400 miles on it so far, (break-in 600) and I love it, 3.55 rear gear and around 80mph @ 2600 rpm. Shifts are smooth and firm as you would expect from a brand new performance gearbox.

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