If you have an original dipper motor (I have an early 50s 235 dipper motor) and want to rebuild it you will need the tools for aligning the splash oilers and setting the dippers. Autozone is not gonna have that in their tool rental program.
But I found this place:
http://www.vintageautostuff.com/rental- ... ystem.html
Description
J-969 Oil Nozzle Checking Tool Set
J-969
Oil Nozzle Checking Tool Set
J-969-1 Oil Pan Target
J-969-2 Oil Pan Trough Depth Gauge
J-969-3 Oil Line Nozzle Depth Gauge
Kent-Moore J-1541 Oil Pan Trough Depth Gauge and Dipper Height Gauge
J-1541
Oil Pan Trough Depth Gauge and Dipper Height Gauge
1947-48 Chevrolet
1 1/2 and 2 Ton Trucks
with 235 cu. in. Engine
I'm pretty sure there will be a hefty deposit... but once you get them you can measure then and make a reference set for you own use.