8.8 swap
Well, I picked up an 8.8 out of a late 90s Explorer over the weekend from a local Pull A Part.. $120 after core charge. (Core charge lol) It's a 3.73 LSD but I believe I'm going to go ahead and change it to 3.27. I just don't think I'm going to like the highway RPMs with the 904.. The 6.4 shouldn't have any issues with that gear combo. I also think I'm going to order the Dr Diff kit to move the springs in 1/2" on each side.. still on the fence. The down side (for me) to this is, that I'm forced to upsize my wheels to 15".
I may start my own thread.. This one is all over the place but alot of great info, when you find it lol.