Hello! Wanted some feedback - I took a measurement & sent it to Adam's when I bought the Advanced Adapters SYE & Custom Drive Shaft from them, they sent this one, I'm unsure if it's the right length. The distance from center of U Joint brackets from Diff to T-Case is 33" -
Wanted to ask, does this Driveshaft length "look" right?
As in, does it look like it's extended the proper amount for sitting at rest?

My pinion angle was about 5° below the drive shaft so I added 3° shims (this photo is after shimming) now measures 3° below. I was afraid a 4° shim might taken me over the suggested 1-2° below angle.

Drove it a 4 hours (2 hours down state & 2 back) yesterday & was getting vibrations around 60mph, they didnt start like clockwork though & seemed to subside sometimes when I got up to 70, didn't always start right away at 60mph but NEVER started at all before reaching 60mph.

More info: 1997 Jeep XJ 4L - Lifted the front 1.5" via HD springs, rear is lifted 3" via me adding brand new Iron Rock 2" Full Length "Add-A-Leaf"s to brand new HD Crown Leaf Springs before installing. I live in Michigan, bought this from a guy brought it up from AZ last year, never seen a lick of rust- parked it for the winter.

I've got to just say- this jeep is fuggin' INCREDIBLE!!! Every bolt comes off exactly as it's supposed to, I've not had a SINGLE bolt or nut give me ANY trouble, it's a dream. Hard to find cars that are even 5-10 years old that are so cooperative in Michigan... She has 129k also.

Thanks for reading, appreciate any input!

(Recap, asking if the Drive shaft "looks" right, and for any input about the 60mph vibrations.)