I have a 6BT 12 valve in mine, there are pros and cons to this motor.
The extra weight and torque of the drivetrain has been hard on the axles in the last couple years, the "cool factor" of a 6BT in your toyota is nice, I get comments about it everytime I go to the parts store or fill it up at the station, but the maintenace costs for a cummins can be overwhelming at times, not that a toyota diesel is cheap either.
I like my little 3B actually, but most will likely find it underpowered for an 80.
I would be inclined to try the newer little isuzu 4 cylinder diesels. Lots of positive feedback and decent mileage from them, and the weight is a bit more friendly.
The extra weight and torque of the drivetrain has been hard on the axles in the last couple years, the "cool factor" of a 6BT in your toyota is nice, I get comments about it everytime I go to the parts store or fill it up at the station, but the maintenace costs for a cummins can be overwhelming at times, not that a toyota diesel is cheap either.
I like my little 3B actually, but most will likely find it underpowered for an 80.
I would be inclined to try the newer little isuzu 4 cylinder diesels. Lots of positive feedback and decent mileage from them, and the weight is a bit more friendly.