some sv2 questions

[Pascewan]

Was thinking about getting a Cougar SV2, but i have some questions which i couldn't find out:

76T Spur, in the manual it's listed in the gearing table, but not with part number, is it U3790? And which Spur is included in the kit?

Is it possible to fit a wheel hex on the pin?

I read a lot of people using 3-hole pistons, which one to use, the schue tapered 3-hole option part and drilling to the wanted size?

Is a set of wheels included in the kit?

thanks