I'm looking at heavily modding my 450 and so far I have the Fuel spec Dasa pipe ceramic coated with Fuel intake and PC3, Ported head with angle valve job and performance cams. What next would I need to achieve 75-80ish hp. Big bore? Nitrous? Looking at spending some money on this thing so any input would be greatly apreciated. I use my bike alot for drag racing and I know it's not the best choice for the application but I love the styling and I know it's gonna cost me some $ but anything can be made fast.