Holy crap...1500-1800 for a rebuilt? I smell something foul, little like bullsh*t. I do know with some work and quite a bit of searching around you can actually do an automatic to manual swap for about that price in parts alone however that might be just a bit more work than your uncle would be happy to deal with unless he just likes tinkering...and you don't mind driving a stick (it's well worth it in foul weather but can be tedious in stop and go traffic). I only mention that last part to contrast why that price seems a bit high to me because a full auto to manual swap requires a lot more parts along with the tranny.
Any 95-97 SE-R's transmission will work in the 97. The 98 and up models will work fine as well with some coaxing. For that matter any FWD model SR20 transmission will work but you'll do less work trying to fit a 95-97 to it since you won't need to change out any axels or drill the case or anything else, in other words it will bolt right up.
95-97 is designated as a B14 chassis, above that is a B15 chassis however the 2.0 was only available in 200sx SE-R's during those years. The B15 looks a lot like the B14 (rounded corners) and the B15's only offered the 2.0 in the 4 door SE model (I think, except for 98 which was the last year of the 200sx) and the B13 (91-94) is a lot more square in the corners (very different from the B14/B15 design) and these only offered the 2.0 in the Sentra SE-R (2 door) version.
You should be able to find a used one though for a 95-97 without much trouble however being an automatic it will be a bit rare compared to the number of manuals that came with 2.0's. The trick is to find either a parts car in a junkyard or someone here on the forum who happens to have one they'd be willing to sell. If I had the cash to do the manual swap I'd sell you mine hehe.
The reason the B15 model requires a different axel despite it being more or less the same car and the same engine is because on the 91-97 model SE-R's came with a different type of differential (LSD) that required a bit more bulge out of the end of the transmission, this means that the axel on the 91-97 models had a slightly shorter axel on one side.
Anyway just keep searching and know that if you cannot find one from a 95-97 model SR20DE and you have to get one from a B13 (not bad) or B15 (better) that any problems you or your uncle has installing it you can get help here on the forum. If you decide to go for a swap to a manual transmission because they're easier to find (just more work but not really much more difficult, just more parts to install) there are tons of resources here on the forum to help you and your uncle with it. I'm sure there are more than a few people who could give you a virtual step by step and you can even get a parts list of all the parts required for the swap
here thanks to wes98200sxser.
can't afford it.. I have been quoted 1500-1800 without installation. Thank goodness my uncle is installing one for me.. Or I would be out of luck.. This is what I have researched.. Do you know if this willl work? What if I found a tranny that goes to a 95-98 SER 2.0, or 95-98 Sentra SER 2.0, or 98-99Sentra SE 2.0. I have found that they all use the RE4F03A tranny, the SE20DE engine, and all have b14 chasis?!?!? If all the same it should work and the axles should also be the same.. right???or is the spline different on all of them?? lol.. so manny questions.. This way my odds are greater in finding one. Because no one in so cal has been able to find a 97 200SX SER used tranny.. And if they do they want to charge an arm and a leg because it has been on the list for all the tranny shops round here (probably for my car since I have been calling everyone for 5 months now.. lol) I have heard that people are even checking the auctions for totaled cars.. eeee gads I am going crazy.. thanks again for all your help
