sd 2200 0.50 pistons

[uwharrie105]

Hey any help appreciated. I have a SD 2200 engine block that was bored to repair the piston wall, it was ran without oil and caused severe damage. Does anyone know where I can order parts for these engines? I know the part# stamped on the top is 0.50 piston, on the bottom it is 8B-25 on oneside and shibaura on the otherside. thanks