I am deep down the Vespa rabbit hole because of Eric in QCB and the "Epic Vespa Thread." I have always wanted to build a really fast Vespa (faster than 43MPH). I went back and forth on building an MP-One full Malossi build or going the Simo route. I decided it will be fun to do a head-to-head comparison with the help of other QCB members. Yes, I am stupid and spending too much time, effort and money on this but here we go. Starting with this Si and then I will move on to the Bravo.