Gilbert - a little different form of trash

While I know everyone says not to use old nylon props, I've found that the original large-hub props seem to run better on these engines than a modern equivalent size.  I gotta say, the black clip on spinner for the .11 is like rocking horse poop. Steve (the guy who had all the Gilbert inventory for sale in recent years) had ones to suit the .07 along with the original props, but I've never seen one for an .11.
Bob, those yellow .07 props should be pushers and were used on the "Wing Thing".  The Wing Thing didn't use the exhaust pipes but had small tongue mufflers, as pictured here.  

I don't think either type were particularly effective in reducing noise.  As I've mentioned here before, many people get the exhaust stack fit wrong by installing either two left of two right pipes to the same engine.  The pictures of the nose of the plane clearly show the engine off-set and the reason for having two different shaped pipes so that they remain parallel with the fuselage.
When Steve was selling these a few years back, he also included an original fuel tank as well as a roll of Dacron control line as part of the "kit".  I have a few new tanks but no real use for them, if you ever need one.  Also got an original hanging card.

Rod.