The part I used for the regulator was
Mr. Heater
Propane Low Pressure Regulator
3/8" female pipe thread X restricted flow soft nose P.O.L.
1/2" outlet
75,000 BTU capacity
Pt. # F276136
All that info is printed right on the plastic package.
Menards carried it in their grill section. There was an endcap that carried various fittings, nozzles, regulators, and other misc parts for propane and other gas.
I didnt see any hoses so you might have to dig deeper in your parts pile at home Brian!