Think you mean 31 spline. Will call Moser in the morning to see what their 28 spline units are rated for. Going to 31 will be a pain as I am unsure I can retrofit my Detroit True Trac with 31 spline side gears. Might have to buy a complete new unit (yikes).
Bob, In case I haven’t said this before, Thank you for documenting the build of your car. It is one of the best resources for anyone contemplating what can be done. Good job!
FWIW department… I think it is really cool that you are driving the car hard enough to need to check for twisted axles. Seriously big plums required to do that with a car this nice.