OK David - I've been in the hobby for about 2 years. What the heck is a pumped OS "SF"?

I did try to win an eBay auction on a Rossi .61 w/ a tuned exhaust. To slow on the trigger.

I also figure that if I use a mount like Hayes AL-60 and I keep the technology the same (2-stroke) for a standard throttle linkage setup, I can "change my mind". I may rethink this approach as I start looking at the built-up cowl. Will it be adaptable to different engine / exhaust combination?

Follow on ...

I went ahead and traced the front portion of the two wing ribs that flank the tail-dragger landing gear blocks. After tracing they were scanned and loaded into Visio to ensure that they didn't lose any of the proportions in translation. See pic ... Though they "look" the same the details are quite different.