Jimmy K5 project gets 4" lift and HP tuners 

Great idea with the hole saw.

As a kid in the 60’s I learned about reversed shackles to raise the rear of a hot rod. It looked odd but was popular with shade tree mechanics. Looking back we do some silly stuff that made sense at the time.

To give a significantly better ride, use actual shocks instead of the crap dampener that they call "lift shocks", use a factory rear length shock on the front from a mid to late 70's Chevy truck, for the rear, use factory length rear shocks from a mid to late 90's Chevy truck, like the 1500, the top mounts have to be swapped, the 90's used a bar instead of the bushing, just press out the bar and press in a new sleeve, easy. The ride is much better, handling is night and day. And yes, if you have a jerking while driving, especially turning, it is definitely a u-joint, you'll get some bucking going on with a good u-joint and trying to turn too sharp. Locking hubs would help

Good to see you back. Looking forward to the test drive .Are the wheels now centered using the new springs ?

Just stumbled upon your channel. You know "Crank" is slang for speed/ meth/prodope ?

What about your Driveline angles ?

Take it to someone who knows what they are doing