What bbk to get for my current config?

[FastSCOOT]

 Hi guys! i've got a Yamaha Neos, curently Dr Evo 50cc kit with a Yasuni C10 exhaust, Stock CVT Setup other than 4.3g rollers, 2k clutch springs, 1.5k contra.

I'm looking for a 70cc kit that goes good with my pipe, i think the Stage6 Streetrace would be more than great, i really want it to be cast, alu kits seem kinda fragile for a new builder, i think that cast ones take tuning mistakes better.

Any suggestions?

[Zino]

The street race makes sense for a cast iron with faster port timimg and a 0-ring head .

[Lucass2T]

DR 70cc kits are around FOREVER and have proven to be excellent kits!
Id suggest try finding a DR 70cc kit first (even old stock) and if that doesn't work out look for a Stage6 one.