roknHS
     Thanks for the tip on the K2R.  I'll look for it in the hardware store.

About the gas engines ....I was thinking a rear mounted carb might be too long but, adjustments can be made by opening up the firewall plate to make room for the carb.  However, I would reinforce the firewall if I were doing it.
I had an older side carb RCGF 20cc that I intended to mount on my Camel but it was too wide.  The cowl would have needed too many holes to make it fit so, I traded it for the Saito 4 stroke that's on it now.  I wish I had bought a 15cc gas for it but, it would have been a gamble as to whether or not it would fit.  The Saito fits entirely within the cowl so it looks much more scale. 
The RCGF 15cc makes about 2 hp and measures .91 cu. inch.  You can get a really good buy on them at Hobby King's USA warehouse.

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