the NV3550 is used in TJ Wrangler and XJ from 2000, which replaced the AX15
as long as the rebuild kit is for the NV3550 the kit would fit.
if the NV3550 in a TJ was different to a NV3550 in an XJ it wouldn't be called a NV3350
the same as the AX15 any rebuild for the AX15 will fit an AX15
the * Gertrag rebuild kit # BK235FWS, $215 -
http://cobratransmission.com/index.p...cts_id=5005016
states 2000-up
you would be pretty safe with getting this kit