Yes, Greg Clayton successfully did so, as did Jeff Hanko (95 to 91 AWD) and Brad Degrazia (96 to 92 AWD).
More and more DSMers seem to be seriously considering this swap as worthwhile.
This information was added by Randy Gonzalez in August of 2000:
"ONE: If you have a 1990 or even a 1991 with a 22 spline transfer case, then you will need to swap the xfer case as well. This is just so that the xfer case will be able to mate with the 23 spline output shaft of the 2g tranny.
TWO: When you drill holes in the dust shield to mount the starter, this CAN be done with the flywheel/clutch disk/pressure plate intact. On the VERY TOP starter hole in the dust-shield (hole that is higher above the ground), drill downwards towards the other bolt. On the hole in the dust-shield that is lower to the ground, drill upwards towards the higher hole. It is very simple, this can be done with even a file if you wanted to.
THREE: the shifter cables mount to the tranny via shift cable giudes. The information given is kinda foggy. In short, just make the guides look identical to your 1g tranny. Do this by whatever means necessary. I just grabbed a pair of pliers and bent the guides until they looked decent enough to install. It didnt' look all great or anything, BUT it shifts great now. I think that is all that really needs to be mentioned to better the information already given to the archives... And to let DSMers know, the 2g tranny is such a BIG upgrade over my 91 tranny. It used to be SO damn notchy all the time no matter how well you pampered it into gear. Now with the 2g tranny, all the shifts are as smooth as a knife through butter. I haven't track tested it yet but I am sure it will hold to my expectations. I didn't cut off the ballast weight. Mainly because I figured that if Mitsu put it there, then it had to serve some sort of function other than to slow down shifts. If that IS the only reason, then my loss. but I just rather be on the safe side on this one; plus, I never hear about 2g DSMers cutting it off their tranny. So why should I? Hope this helps someone in the future of those that are pondering whether to do the install or not."
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