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Finally back on my 5 ton project. Between buying some off-grid Az property and having a kid it's been sitting for a few years. Have my 6BT almost built, was wondering if anyone has any experience in swapping that with matching one up to the Spicer 6453 or close. I know it's the STD #2...

This truck was redone in 1975, so I am guessing as it has the 673C, I am strongly considering doing a cummings swap for reliability/power/easier to maintain. Would anyone here be interested in the engine/trans from an M54A1 and what could I expect to get for it? Located in So. Cal. Not ready...

Hey fellas, I just completed a long term goal and finally got a 6x6! I was originally going for an M35 with a multi-fuel engine but I couldn't pass on this ride. The tag says 1975, not sure if that is manufacture date or a rebuild date, M54A1 with the Mack ENDT-673. The brakes are out (brake...