Vacuum Cleaners Discussions

I have a Lux Epic 8000 canister, and the motor is gone. I'd like to replace it with a more powerful motor and I know this will require some modification. Yes, I'm talking about a "bojack" procedure. I'll probably raid the boneyard at my friends vac shop for another motor. Has anyone ever done this? Any suggestions for what brand of machine I should look for to pull a motor from? I really don't want to replace it with the same motor because I never thought the original motor was strong enough in the first place.

I really like the machine too, just not the motor. About 10 yrs. ago, I put a 10 amp Ametek from a Kenmore in a Renny. I had to do little plastic chopping to make room for it in the housing, and then fill in the gaps with spray foam insulation, but it was well worth the trouble. I love that Lux power nozzle when it digs in to the carpeting.  I just don't want to do all of that again if I don't have to. That's why I'm curious if theres a motor that excactly the same length with the same size (or smaller) armature housing.