Tell him to just get some drag radials. I have Nitto's and love them for the street. BF T/A's are better at hooking..but don't last more than like 5000 miles. Nitto's can go up to 15,000 miles. They made a 275/40 17" if he has the stock 17's or if he has the 16" rims 245/50 like I have. Nitrous is the best bang for the buck..no doubt. Just have to use it carefully and always run good gas. Is it just a dry kit? Or wet kit?