Anyone know where I can find an old Cessna 140 (for example) fuselage for
cheap that I could mount on a pole out front? Or a big ol' Convair prop?
Something I could hoist up onto a 3-story sign, to catch the eye of
travelers?

I think I found just the thing for you... (though you're gonna need a
really, REALLY stout pole...

http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

.... or if you prefer, item number 4532033102.

Mark "shipping's gonna cost you though" Hickey