Blaine, two suggestions for more loss of sleep: try the cable shifter developed by Lloyd Butfoy for his 6-speed ZF, and refined by the current rights owner (who's shop name escapes me right now but it's popular with GT-40 kit-guys and other mid-engine racers). A few are being successfully used in Panteras.
Steve Wilkinson in So-Cal has a complete Pantera SI frame hanging on the wall of his shop, rescued from the debris of the old DeTomaso factory in Modena. He has photos.
Cheers- J DeRyke