If you don't play with the pulley sizes, a Judson on a bored 1275cc engine will give you about 2 psi. boost, maybe less. If you then play with the pulley sizes then something will break. > Raleigh NC Craigslist has a 1275 (bored to 1500?) with a Judson > supercharger? > > > > http://raleigh.craigslist.org/cto/1015326883.html