mjcatz

Yeah, calipers aren't too straightforward, but because it's exactly .750, you just read off the zero on the right. If it aligned with another number, that would just indicate a fraction, like .755. And you're implying that the mount is hit-or-miss, and it may fit perfectly, but could also need modification?

The input shaft looks to be 0.750 exactly, so the pilot bearing I had listed should be the correct one.

It's the 4.0 I-6

I recently acquired an AX-15 transmission and want to swap out my current BA-10/5 for it. I don't have any donor parts from the original vehicle, so I need to make sure I purchase all the correct components. If I purchase this adapter, I should be able to use the existing x-member and mount, correct? http://www.advanceadapters.com/products/716007--nv3550--ax15-crossmember-mount-kit-for-jeep-yj-wranglers/ And I know the 4wd shift linkage is different, so I'll need something like this? http://www.advanceadapters.com/products/715545--transfer-case-shifter-bracket-jeep-np231/ The X-15 was pulled from a '92 XJ, so I believe I should be ok with the existing hydraulic throwout bearing (I believe '93 and later need the external slave cylinder). I'm placing it in a 1989 MJ, and from what I've read, the later BA-10/5 outputs could be either 21 or 23 spline, so I'm not sure if I need a new input gear for the t-case. Also, is this the correct pilot bearing I would need? http://www.advanceadapters.com/products/716164--pilot-bearing-750-id-x-1818-od/

I've run a Flowmaster 40 for a while on my MJ. I would agree, sounds great at idle, but the tone gets really muddy at higher revs.