Auxillary fuel pumps help

[gunrunner99]

I have had my Skymaster in annual for the past year. Mostly my fault as a mechanic friend has been helping me. My auxiliary fuel pumps ere leaking pretty bad so I decided to replace them. I ordered the ones my friend told me to order and installed them. Fast forward a couple months and we are going to finish everything off and the pumps do not work on the low setting. He says we must have ordered the wrong ones. I can not return them to Spruce as they have been installed and I sent the boxes back to Spruce with my old pumps in for cores. Looking at the maintenance manual it says I need parts number 1426033-1. I found someone parting out a skymaster locally and they have the pumps but the part number is C291504-0201 Weldon 18000B. I can not figure out a way to see if these cross over. Any help would be appreciated.

Mike