my polini'd ssxl is aight.
hitting low 50's pretty easily on some of the long straight aways here (i weigh lighter then your pillow). I think i will do some more aggressive porting and get a better top end puch exhaust to fit.
My gearing is just sickly for top end and I lack all kinds of low end so w/e.
Very happy to have a 50+ mph garelli though.