My boss always tells me to not over complicate things so what do I do of course? Sorry guys for any confusion. The guy wanting my NV3550 has a 4.0l engine and not the 2.5L. He's apparently has the AX-15 (not the AX5) that no longer operates well and will be taking my NV3550 from my donor Jeep as a replacement. In my initial posts, I thought he had the AX5 so that's why I was asking if the NV3550 was a suitable replacement.