So, just found a Razor e100 scooter by the garbage can of a neighbor. Tab on thumb throttle was broken and of course no charging cord. But free is free so no complaints. The thing basically looks new- ordered the charger and a twist throttle that replaced the thumb tab type. But here's my question, I want to know if I can upgrade the scooter to a 250W motor or larger and if so, can I just use e300 parts (I'm pretty sure mine is a series 1 and it is indeed belt drive- there was no stamp or sticker under the deck or in the battery compartment? Could I just change to the e300 parts- the rear tire, chain, motor, and maybe a motor controller??? plus some larger batteries??? Not sure if the chassis is compatible or not as I've never even seen the e300 types. Any help would greatly be appreciated.