I’m brand new to xj’s ive had several wranglers before but this is my first Xj and I love it, so I bought a 3.5 rubicon express lift and I didn’t realize the two different axle sizes so I got one for the 8.25 and started to assemble and realized I needed for a Dana 35 so what’s the difference is it just the u bolt size or are the leaf springs different to?