I'm just getting around to figuring out the basics of porting, and what does what, and why, and through searching, found this thread. I just did some degree wheel fun time and came up with these numbers for a DR kit with a Mazzucelli Anticipato crank in stock cases with a modified intake patch. My numbers seem to be pretty close, which actually shocks me. I'm just seeing if anyone can verify any of this (aside from the intake patch, since it would vary by builder), and also to bump this for more Vespa tech. I'm trying to do what I can with an old kit, setting a goal of 55mph on my Ciao. Top end being more important than low end.