I know these are getting scarce now and there are a few members looking for 9.8 2 smokes, this is a nice outfit that's just come on eBay (nothing to do with me but hopefully of interest to others):
Valiant D300 RIB 3m 9.8hp Tohatsu + Trailer (all good working order) | eBay
Engine is a slightly older grey hood model but still probably a grand's worth. Trailer a few hundred so if you just want the engine then split it and sell separately and your quids in. Done it myself once to end up with a very cheap Yam 15.