Greg, yes the motor that was used in the Renaissance will fit your machine IF you have the motor housing from a Guardian C134. That specific model, before the C154 Lux9000 came out and the VM3 motor was introduced used the Electro Motor double stage motor.
What I would do is buy a Guardian C134 listing on Ebay for the canister only and strip it for parts, since you would need to buy a motor housing, and you can always keep the cord reel and circuit boards for spare parts. Beware though, if you do buy a new motor, use ONLY the Electro Motor 6500-293. DO NOT USE THE 6500-298! That motor is sold on Centralvacuummotor.com as their 6500-242UP upgrade motor that pulls 117" waterlift. However, that motor pulls too much power for the circuit boards to handle and will blow them! I speak from firsthand experience. Also, make sure you buy ONLY a Guardian....they not only changed the motor housing, they also made slight changes to the body when the Guardian was introduced in 1999, so the Renaissance and Epic8000 motor housing will not work to fit a double stage motor in a Guardian.
Rob