I have 4 briggs engines (3.5 to 5hp vertical shaft) and a tecumseh of ??? hp I'm willing to trade for the Powermate.
One of the briggs engines is 'parts only' (the rewind is jinxed and I tried to rebuild it, yea, it's not so easy. It's tired anyway) One has a chain drive PTO off the side and has low hours on it. The others I'm not sure, but are in good cosmetic shape stored indoors and not rusty and crusty like the parts engine sitting on its rusted mower deck outside. Tecumseh engine is hard starting and well running as of 2 years ago when it was replaced with a different engine.
Shoot me a PM and I'll get some pictures of the engines, and make sure all of them spin freely.