Quote:

I asked Dr Diff the exact same question, his reply

THEORETICALLY, IF YOU LEVEL THE
PERCHES (44 ON CENTER) WHEN THE PINION IS POINTING UPWARD 8 DEGREES,
THE REAREND WILL BOLT IN THE CAR WITH A STOCK PINION ANGLE.

I had the rearend in the car with desired angle before welding.
Might as well get it exact.



Sorry, forgot I also used the good Dr's 1 inch relocation brackets.
That's the reason for 44" compared to the stock 46".
Bottom line, as stated, set-up in car before welding. Then you can also correct the side-to-side offset these cars always seem to have. Stock rears are never centered on the body, leaving a bigger gap on 1 side and rub on the other when you try to stuff bigger tires in.