You do understand that it doesn’t really matter what other people do? You need to make sure that the angle of YOUR pinion matches the angle of YOUR transmission yoke. If the trans is 4 degrees down (arbitrary number there), then the pinion needs to be at 4 degrees up. Or whatever degrees your transmission is.
This is a lot like Follow the leader. If you don't know where he's going you can end up somewhere you don't want to be. In your case you need to be doing your own Math. "Just Like Him" doesn't mean it's going to work for you. In fact, doesn't mean his works for squat either.
I figured 49-51 required same measurements, thank you guys for the pointers I'll get under her and see what's up and get back to you guys after to let you know how it turned out
Definitely changing rear tires is a problem!! Rear shocks have to come off just to change a tire!!! Real pain in the ass!! I even tried letting all the air out of it and still couldn’t pull em off. You should consider bags down the road, I know I am