OTR in 93 Pete 379 3406B?

My electronic options are 3406e, Detroit 60 or N14. All those are good, all those that I’ve found in my price range have been in beat up trucks. There’s a 1999 W900 south of Salt Lake I want to look at as well. It’s a 550 Cat with a 15 speed and 3.36s. Looks like it’s in immaculate shape as well, and maybe a better truck than the old 379.

 

I’ll be hauling 80K all over the mountains of western Montana. The range I’m looking for is anywhere that isn’t California within 1000 miles of home.

 

Someone that I like about the B engine is it seems similar to the P-pump 12V Cummins. I intimately know those, and how to crank the power out. It’s fun in my mind to turn wrenches to crank up some power versus turning a dial on a power module. So long as I don’t break a crank or something.

 

How are the sleepers in the older 379s? Is there room to stand up? How’s parts availability for the 3406B? I’m torn between this 379 and another one that just popped up for sale that has a Detroit 60 12.7 430/470.