help modding plz

o ok do you have his name ide be willing to pick up some quick parts, from what ive read the venom 400 can add up to 25% hp???<this is why im asking you guys can it really do that does anybody have one that works…ide be fine with at least 230 to 250 hp just want to know the quickest route to it. I guess the better question would be what do you guys have on your cars that works?