4 Inch Shackle Flip?

[wells]

How many have been able to install ORD's 4 inch flip on a K5 and NOT had to correct the rear drive shaft geometry?

 

[Hogback Fabrication]

Most people don't need to mess with pinion angles after a shackle flip. If you do here is a good write up of what needs to be done:

http://4xshaft.com/index.html