Two things I have been looking into hard is the AEV big brake kit and the Dyntrac Prorock 44. While on dyntrac website i came across a spec sheet comparing the stats on all types of d44's including TJ, JK, J8, and Prorock.
When I happened to look at the brakes info I saw the J8 had 13.25" discs and dual piston calipers. My problem is that the AEV Big brake kit is $1600 for the kit for 17" wheels
info here:Big Brake Kit FAQ - American Expedition Vehicles - Product Forums
which comes with 13.2" discs and dual piston calipers as well as a new MC(side note: AEV is also selling the J8 rolling chassis and just so happens to have just released the similar big brake kit for any D30/d44, possibly the same setup that comes on the J8 d44).
My question is, but im having trouble finding the replacement parts from Mopar, is would I be able to just buy replacement knuckles for the J8 D44, new replacement discs and calipers and bolt it on my new prorock 44.
The only real problem I see is the J8 has a 5x5.5 bolt pattern which may mean the knuckle may take a larger wheel bearing unit for that bolt pattern than the 5x4.5 on other d44s. This is the only missing piece that I dont know if anyone can answer this. It may be the same size wheel bearing just different bolt pattern, but i know the knuckle is atleast bigger to handle the larger discs, same as the AEV Big Brake Kit. Does anyone know if there is a difference? Also the ball joints, are they the same size on the J8 as other D44's?
But if I can use the J8 knuckle and a regular dana 44 wheel bearing unit with 5x4.5, im sure it would be much cheaper to buy J8 d44 replacement brakes than a $1600 dollar kit from AEV. Im still doing research trying to find answers, just putting this out there for those interested and if anyone has more insight than me?
Also the complete J8 D44 can be purchased for a rediculous price from QuadratecMOPAR P5155084 - MOPAR® Performance Military Spec Front Dana 44 Axle Assembly for 07-10 Jeep® Wrangler & Wrangler Unlimited JK - Quadratec