Hmmmm……M-11, something like this?

at link http://www.warbird.at/englishversion/engl_market/engl_wbmarketparts.htm

M11 engine, complete less HT leads, engine mount, CS propeller, new inlet/ exhaust valves,
make an offer,
contact:
[email]yakuk@compuserve.com[/email]

a bit over halfway down the page. Happy Hunting!