It is a second generation Runner if it is a 95 with a 3.0
Mileage sucks on the highway because of the overdrive. The trans and tcase are one unit. The tcase runs like a auto trans w/ a valve body etc. and robs more power from a gutless motor. Check to see if the head gasket recall was taken care of on the vehicle for the motor. It is a good motor if it has been taken care of. Same with the trans, but many including myself swap a manual in to get better mileage and save on the cost of adapters for tcases.
There are adapters the Inchworm sells to adapt crawl boxes and gear driven tcases to the trans
