Modern Vespa

Hi, I need help coming up with a price for my red 2002 Vespa ET2. It has 4300 miles, at 2200 miles it was kitted to a 70cc, new 17.5mm carb, Leo Vince SP3 pipe, new battery, and a set of Zippy tires, and I have all the original parts if someone wished to change it back to a 50cc.
Runs perfect, starts every time, everything is spotless on the scoot, never dropped or wrecked. The only mark is one tiny 3/4" scratch that has been touched up. Even the clock works perfect too (new battery for that). This has been my baby for sure!
Any help will be great.
I'm in the process of buying a 250.

So, no ideas on this?

I'd put it back as a 50cc and sell the kitting parts on their own. You won't get much for them if on the bike and the fact that it's kitted may make some shy away. In this market, Summer, etc. I'd shoot for $2500+ for the scoot (stock). Sell the parts on scoot.net, eBay, etc.