1. will need a picture to verify this.
2. plenty of stores. Denniskirk.com or any moped shop website will have the. Whitewalls included.
3. Your puch is considered the EASIEST moped to find parts for. Stock or aftermarket. You can literally build a whole puch from just aftermarket parts because the selection is so broad.
Check out. TREATSHQ (ebay store):
Here is a link to all the moped shops:
Note: most if not all the information you will want to know can be foudn through the WIKI as well as the search function. Each individual category (general disc, b/s/t, repair, performance) has its on search function that only searches THAT specific section.