I bought 35 parts from BMR who was a member here at the time two or three years ago. He is in SE Minnesota if I remember correctly.
Did more looking and did not find him but look for Bronson Mobile Repair in Harmony Minnesota.
If jug is good other than the bore you can resleeve back to your good piston dia.
Thanks, was able to ream out to good surface, and weld up two so no more water leaks. Have running just need to get bottom radiator tank off now so can weld it. Cracked along an old braze patch.