That is part of why I decided against using the Belltech flip kit. It advertises 3.5" drop for the rear. in order to do that the shackles have to be shorter than the normal 3" lift shackles that are needed. I have to assume that the brackets for relocating the front hanger are shorter also. This will have to be compensated for with the shackle.
Talk to the guys at JOR and let them know you need shackles for 3"-5" lift. Start at 4" and adjust up or down to set your height. It is possible that you might need a pinion shim. Only if you develop a vibration in the rear after you have the height set.
Talk to the guys at JOR and let them know you need shackles for 3"-5" lift. Start at 4" and adjust up or down to set your height. It is possible that you might need a pinion shim. Only if you develop a vibration in the rear after you have the height set.