Hi,
I seen the add for the Mac 38 and 8,000 is better then the G-38 performance at the this site http://www.rcfaq.com/rpmstats/rpmbycc2.htm##24
I seen a slightly used Mac 38cc being offer by the same guy for $135. I don't know if he still has it. He also has a video of it flying a stick design with authority.

Dave