4.10s with 30" tire??

Rice Nuker said
http://www.summitracing.com/popup/calcsandtools/gear-ratio-calculator

I would run 3.55 with a 27" tire.

why run a short tire unless you have to... these car looks great with a tall tire IMO. if he can fit a 30 and isn't worried about having it sit to low or the extra price of the tire's just put more gear in it!

and i use randy's calculator lol...

http://www.ringpinion.com/Calculators/Calculators.aspx