06-23-2015, 03:41 PM
Jon is right about the donor bus, If you decide to go with a 5.9 find a mid 90's with the mechanical injector pump. It will save alot of wiring issues. Allison 3000 series trans. Theres LOTS out there for sale cheap and they're a great engine.
Love old school

1976 Newell 8.3 cummins allison 6spd
1977 Newell 8.3 cummins allison 6spd