I got it done at Pete’s welding and driveshafts in Trenton NJ. I just called and asked- he said they balance at about 3000 rpm. If my math is right with a 28” tire and 3.21 gear that’s 80 mph in 3rd.

Dunno if that’s good bad or average but I’ve had a few shafts done by them and never a problem. What rpm would you be hoping to hear? Does Mark Williams balance their CF shafts to a higher speed like ludicrous or plaid? I’m just psyched to know it won’t be breaking the shaft, yokes, or universals again soon!