I have to question your thoughts sir.
The T56 in both trans were totally different, the vette had a 26 spline input and the cobra had a 10, the outputs I believe were 31? So I will take a pass on that bundle. The Cobra had wayyyyy softer bushings compared to the C5Z, hell even the half shafts had a strong spline which I'm sorry I can't rattle off the top of my head but were well above 10 spline... Stock for stock I will shake your hand on the violence feeling but you've been here and seen or raced as much as me but I will admit stock for stock the vette wins but a modded cobra wins bang to buck. Your still my bro and I love your car!
Well the major difference is the Cobra had a traditional trans and engine hook up while the C5 had a engine, torque tube, and transaxle between the rear tires. That is probably why the Vette had the different splines vs the Cobra.