LS tranny mileage

I found this guy locally that has a couple of 91-93 tegs, I am searching for a tranny, rear mount, obd-0 ecu, and axles/halfshaft. The guy said he would pull everything and a friend who works at a local speedshop here recommend the guy very highly. My question is both tranny have at least 100,000 miles on them. How long will this tranny hold up and is this a good deal for $350?

im assuming that you already know it wont bolt up to a D-series engine right?

Yeah I plan on bolting it to a newer jdm LS or a b20 with ls intake manifold.

i just got robents momo wheel for 50 and put it in the hatch. it looks hella tight man.

Well there is no telling how they were treated so it would be a shot in the dark on your part. I would say drain the fluid and run some synchromesh and hope for the best. The ls tranny in my car has over 200,000 miles on it.