port the fucker. its free.
& LULZ @ the dude putting on a vartop with NO clutch pulley.
also, if you go parma, 19mm carb MINIMUM!!!
theres about a hundred ways to make a 50v go 45. porting/pipe/sha is the cheapest.
as far as greatest kits of all time goes, puch polini #1, moby parma #2
they are fucking BULLET PROOF!