Got hooked up with a fellow flathead guy and he gave me the link.
It does work better now but everything is pretty loose/worn. The rearend seems to be an early model 9 inch, probably from a late 50 early 60 pickup, 3.70 ration doesn't sound too bad, with a 9 inch rear there are lots of ratios available. Should handle the 239's horsepower without too much problem.