Thought I'd throw my hat in the ring.
I work for Auto Gear in Syracuse; we build the strongest synchronized 4speeds on the planet, along with designing castings, transfercases and we're also the east coast's largest Tremec parts supplier. My boss George has been designing manual gearboxes for 40yrs. I don't sell whole units for Tremec, and Im not here to make a sales pitch, but I hope you guys tap me on the shoulder for finding T56 and TKO and even the TR6060 (T56 magnum). If any of you guys have an older conversion with a T5 or even a Muncie or a T10...Im here for you.
I've got a T56 catalog that will cross the dealer part numbers over, to the Tremec parts, which makes them a lot easier to find. Look below
T56 for camaro
I also have them under our Aftermarket tab for the Vipers and Corvette.
All these diagrams and breakdowns are the property of Auto Gear and George Sollish