I understand one of the problems with building a manual trans panther, is that underdash bracing interferes with the clutch pedal assemly. The bracing is a necessary part of the 5 star crash rating system. I think Roush ran into that issue when the Bondurant "CobraVics" were built. I'm sure 5 star crash wasn't an issue with Bondurant.
Dave (1stMMGTCC)
Dayton Ohio -- BIRTHPLACE of Aviation, the Automotive Self Starter, Cash Register and the highest per capita number of patents in the USA and home of the first MM with GT Coil Covers