You could I had a mate that did full xforce exhaust and injectors and made 302rwk BUT when it came to summer it struggled with heat due to stock intercooler and piping. I did cooler kit, injectors, high flow cat and cold air intake growler and made 280ish rwk and cost from memory around 4g's. realy up to you in which direction your going to go with mods either way all comes down to the tune. Whos doing the tuning???