Montgomery ward help

Hi, first post here. I just picked up a nice Montgomery ward mini bike. I’m trying to figure out what I have and where to find some parts.

I can’t find any stampings on the frame, but the engine is a HS50-670090 SER6247B

The carb has 5275 AGS stamped on it

I need the carburetor governor linkage arm, governor spring, and the brake band assembly.

Looking to be pointed in the right direction. I’ve done some internet searching with these engine and carb numbers and can’t seem to find anything.