I think it will be tough to make an in-tank pump work in the in-cab fuel tank. One it will need a unique, smaller opening to fit it all through, two it will need a very long hanger, three that tank is not baffled so when low on fuel it will slosh away on turns and starve the pump.
I would find a tank that mounts between the frame rails under the bed and then use a Tanks Inc PA series in tank pump. This eliminates the slosh issue too.
https://www.tanksinc.com/index.cfm/p...prod/prd84.htm