F1 tuning claims 30% hp increase, 40% tq increase, you believe it?

I want a built 1g gsx or a 2g with a 6 bolt swap/2.3 stroker… Been trying to buy my mechanics gsx spyder for a while but hes been just letting it sit with brand new paint for like 2 yrs lol. It’s black with a black top and rare black leather interior, MINT. Shit is pretty sick.