ms 390

Can someone confirm or deny that I will be able to take the stock cylinder and piston off my Ms 390 and put it on a 029 super. I can get the O29 for cheap money and it's running. I need the CCs but I don't really want to change the broken oil pump on the MS 390 so I rather just take the top end...

I was looking at Huztl descriptions for the replacement parts for the 49 mm piston and piston and cylinder kits for ms 390. The ms 391 is not included for the replacement part along with the ms 390. Are the 49 cc piston interchangeable. Are the cylinders interchangeable. I'm looking at a cheap...

my uncle dropped by today with a clean like new MS390 thats got no compression at all , won't even fart--lol normally i toss these clam-shell stihls. but this one is so new like i'm having second thoughts. like maybe a hutzle shortblock? i haven't looked at the bottom end for excessive slack...