For most stock Cummins parts , go to Cummins ,
I do not know all of what he does or has , but I got a lift pump & overflow valve , about the best price , he does not seem to have a web site or link ,
Precision Diesel Injection and turbo - Michigan
Marty Tompkins -888-734-7349
a few mths ago it was less than $150 for a lift pump & overflow valve , that included sh.