[Moto-Mojo]

This pains me because for 49 years I've been in - and now retired, from the driveshaft business. For decades we used u-joint series to spec HP, torque, angle, etc. (1310, 1350,1410, etc.) And tube dia. & length. But don't recall ever seeing a flex disk ('guibo') like our Camaros have being equated to a particular u-joint series. And they've been around a long time. Mercedes was using them in the 80's. But generally speaking, they're tough SOB's. Until they're not.

I'd have to believe a fudge factor was built into the stock shaft. But Cracka's must be getting out toward the limits. Roughly double the HP of the OE. Good to know they can handle it.