1500USD to build as much horse in a 360 as possible. What would you do?

Yeah, used ones would be an option! But extremely hard to find if one of you guys dont happen to have a pair that you are willing to part with for the right amount of cash ;) One thing is clear, I don't want no clean engine compartment that screams "I've been prepped!" so a pair of rusty headers is no problem at all!