Hi--
I haven't got an "in" with any of these, but how about:
--the CHAA Harvard demo team (out of Tillsonburg ON; 5x R1340 and an absolute delight to watch...and listen to!)
--one or more of the R4360-powered racers: Furies "Dreadnought" and "Furias", or (a bit closer geographically) Bob Odegaard's gorgeous F2G Race 57
--one or both Berlin Airlift Society transports (C-54 with R2000s; C-97 with R4360s)
--a Gee Bee replica (R985)
--the Canadian National Research Council's Twin Otter (2x PT6A) or Harvard 4 prototype
--CWH's Canso (2x R1830)...
Cheers; hope P&W's "bash" goes great! Or maybe I should just say "more power to you"?
S.