Khare you been in your kart yet? Nothing compares to it and any car feels slow
you don't need a fast car.
Plus I have a vr6
Not driven mine yet as it's still not completed, but I have been in race karts before. Do remember I raced in Brazil back in 2010

I think it was Khare that put a 286 kent cam in his 8v iirc! I looked when doing my engine swap, and they do occasionally come up on ebay. The ones I was looking at only went for £35-40 as well so well worth the cost imo, although at the time they both sold, it was a couple of days before payday and I was proper skint at the time! 
Yup. Kent GS23H cam. 11.52" lift, 285 degrees duration. Rtech dyno showed 138hp with cam, airbox mods and exhaust. 16v is a much better car to drive as the power is held for longer up the rev range and its a more linear power and torque curve.
If you can find a hardcore cam for under £50 then great, get it, but don't spend £200+ on a new cam as for that money you can buy a good 16v engine and stick it in your chassis, and instantly it'll feel like a new car, and sound better too!