Leaderboard

Yes. I run a t-case from an MT Xterra on my AT Pathfinder (04) so can at least confirm the mating pattern. The lip on the front cover baffled me to; seems it was for seal lubrication since the cavity between the MT and t-case contains gear oil, whereas the AT cavity is dry (there's an output seal on the AT and an input seal on the t-case). The lack of a lip from an AT unit on an MT seems inconsequential, but it may be the case that those TX10s also ran gear oil instead of ATF. Nissan used both in the TX10, and considering there'd only be one seal separating gear oil from ATF, you'd probably want to considering flushing out the TX10 to run gear oil. The driveshaft yoke will fit the output shaft all the same, but the real question is if the transmissions are the same length. The FSM specs driveshaft lengths; as long as the rear (or front) drive shafts between an AT and MT for your model year truck are the same, then it's a pretty safe assumption the MT from a donor will be the same length as your AT. Unless you want to be into things for the long haul, I'd not go this route. I'd assume nothing bolts up, and everything needs to be brought over; just buy the Xterra. Otherwise, the regular MT swap shouldn't be difficult. My buddy converted a 00 Frontier AT I had to be manual; pretty much same exact job you're thinking of. Keep in mind you'll still need more than just the transmission: clutch pedal, master and slave plumbing/parts, floor panels/covers, center console, etc. Bypassing the shifter lock-out is trivial, and I don't recall if he had any issues after disconnecting the AT control unit.