Has anybody used a sbp expanison chamber on a franco morini? im still trying to figure out what pipe i should use on my next build, i have a sbp on my china girl and its great but i also know that the pipe can either kill the performance of a engine or make it better so im debating if i should use the pipe or if i should spend some big bucks on a scooter pipe made for the Morini, i saw this video on youtube so it is duable and hes got a nice little setup i like it 
YouTube - Franco Morini Giant Bicycle Sick Bike Parts Chamber 3.2hp
YouTube - Franco Morini Giant Bicycle Sick Bike Parts Chamber 3.2hp