Dick,

With all due respect, and that was said in sincerity, you always seem to be having to pipe your engines in order to pull every last possible rpm out of the darn things to get the performance you need. Along with that, they are a lot lighter than what will be needed in a warbird like the T/F -P-47. They always come out tail heavy, often quite a lot.

Yes, the ZDZ 40 and 50 will pull it, but you will be adding a pound or more of ballast to the nose to make up the weight difference. That puts a pretty big hit on the ZDZ. Warbirds also do not usually have the open fuselage space for cans like th H-9 Extras and stuff do. Fact of life, aerobats and warbirds are different, and have different requirements regarding engine weights, exhaust types, and power levels. I, for one, would absolutely not want an engine with a rear carb on a warbird. What a P.I.T.A. to work with in that type of an installation.

Personally I'd rather see you set up someone as a happy ZDZ owner, not one that may well be wishing they had got the other engine shortly into the first flight.