You should get good money for the 400 engine which should offset the cost of the Dent engine a bit. The mailing list is on
http://edj.net/gammalist and worth a look.
I've (hopefully) attached a pic of mine as it is at the moment. I rebuilt the whole thing 10 years ago and the chassis/brakes are currently being refreshed. Funnily enough the engine didn't need anything doing!
Keith