Well those are higher numbers,but look at the dollar to hp ratio. Those mods were not cheap and the same or less money gets good turbo parts that are just as relaible. My 98 Y8 has 150k miles,Greddy 19T kit,headstuds,tuned by Vega ,and I just made 240/225 on the rollers 2 weeks ago. If he really likes the n/a thing than do it,but the first race he loses to a mild turbo car and he'll probably be disappointed. HP is like Crack, a small amount is never enough in time.