Actually that was going to be my next question. Have I bought a .15 engine thinking that I would get a speed increase, when in actual fact, the .15's are designed for torque & not hp?

I do see some touring cars with .15, but I presume that there angines out there that are designed for hp, not torque, just have to pick wisely I guess!

I'm gonna check out the site for further info anyway, thanks.