Originally Posted by marconi118
My 677mm are from the middle of the hole in the bearing (where it bolts to the car) to the flange surface where it meets the guybo at the gearbox
I measured the same way, my best guess was 675 and my shop measured 673. Don't tell them but I actually ordered 674mm to split the difference and was worried that was contributing to the wobble. I'll be really glad if it doesn't have to go back to the driveshaft shop. So yeah, we're 3mm off and it's not rocket science but seems like a pretty decent independent measurement result.