[51504bat]

No such thing as narrow belt truck pumps. If you want to stick with narrow belts you have two options. One, find a set of Merc OCM narrow belt pumps that appear similar to truck pumps but the mounting heights are different and require a u shaped spacer. I'm running them on the 8ba in my '39 p/u. Or two, you can fab up a metal bracket that bolts to the original car pumps and then bends to allow the use of original biscuit mounts. I no longer have the car pumps with the fab'd bracket that were originally on my p/u before I changed over to Merc pumps but attached are some photos of the Merc pumps I'm referring to.