Looking at the pictures of the model on the Great planes web site it appears to be pretty well built. Monokote covering, decent hardware, etc.
Tower has them for $130, maybe if they come out with a coupon...
Bill, these are\were engines that I have on some older control line models that I converted to control line and keep the carburetors. The .20 is on a Flite Streak and the .40 is on a Ukey...

They still run good, why not try and get some use out of them...[sm=thumbup.gif]