If you get the T5 with the shifter toward the front of the tail section (where the tail section connects to the main transmission body), then you'll have the shifter in the right place for the bench seat and you will only have to cut about a 3 inch by 4 inch hole for the shifter...which can easily be done with a sabre saw in a minute or two. The S10 transmissions (and the van transmissions) work ok for the bench seat in the AD trucks. The transmission bolt holes are metric and miss being the right diameter for the 235 bell housing by just a hair or two. Run a drill bit through and you'll be done. Easy work. Some have an input shaft which is a bit too long, however some (like the one I got) require no trimming of that. And you must either find a Jeep input section (10 spline) or use a clutch disc with the right number of splines for what you have. In my case, I had an 11 inch flywheel and I used an 11 inch pressure plate and clutch disc which had been designed for use in some GM product which I don't offhand recall--14 spline. All in all, it was one of the easiest transmission swaps I've done. As for the speedometer, you can use a manual (cable driven) one or you can do what I did and convert an electronic (even a GPS type) to fit in the original housing and look pretty much like the original one. I've posted stuff about that here.
The 10 spline Jeep input shaft will open up different pressure plate/clutch plate combinations for you and as I recall those input shafts are $100 or less.
