Shackles and Spacers Help!

current I have a 01 xj with 31's with a 4.5 in lift only measures 4" lift from stock. I have the rock krawler 4.5 long arm kit with the 3 link its out of an 88. doing last part swap this weekend from the lp dana 30 to the hp due to front driveshaft angle problems. Now i wanna get a little more lift so was looking at getting 2" spacers and 2" shackle lift but my question is will i need to either shim the rear axle to help with the angle or put in a hack n tap and cv driveshaft after lifting it another 2 inches.

You will most likely have to do an sye. At that height it would be a good Idea to do it anyways whether you have vibes or not.