The same size that came out of it.
Yep stay with stock.
Well I know that but need to go bigger to much truck for such a small engine..
If you want to go with a bigger engine, then you would need the transmission that goes with the engine you want to put in along with the computer and wiring harness in order to make it run.
Depending on what you want to do, you may want to consider swapping out the rear end for shorter gears, make your truck faster off the line, if you don't mind sacrificing freeway gas mileage. You'd want to tweak the PCM if you do something like that.
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