Truck shop you need to own that unit and do it justice.
I don't know about justice necessarily, although those early 70 Power Wagons are getting tough
to find. Most have been stump jumped to death, are so cobbled haywired only worth scrap. Ones
with big blocks are really scarious plus extra thrashed in many cases. Dodge stopped the big block
option in 1978 because the B/RB engines were being laid to rest with only option as the 360.
In order to install a B/RB it needs to have the smaller diameter dual vacuum chamber brake booster
for valve cover room, and I happen to have one of those in new condition, plus that item is getting
tough to find, other than that most everything is available.