454Sub
5/8 ton status
The Allison sucks HP/TQ quite a bit more than the 80E. Once you address the air in/exhaust out problems, then get it tuned, you will gain enough fuel mileage and power to justify it.
Nice truck! What size are those BFG`s
I got 255/85/16s on mine.
Did you ever pull the cats and finish the tune?
