A guy from the UK has the same idea and has fitted modified cannon. I checked the post on Pinside.
Some Chinese supplier will be wondering why his model cannon sales are shooting up.
http://pinside.com/pinball/forum/topic/acdc-cannon-mod-1This guy has removed the right wheel and cannon rest.
As I said earlier, this $10 toy is just the right size and should be a hit with the mods.