I just ordered my 05 off road 4X4... it will be my 3rd xterra and I am soooooooooooo pleased they fixed the power problem... however Call me greedy but I would love some suggestions for squeezing another 40 hp out of it!!! I'd love to come in a bit over 300 horsepower and this seems like the place for ideas.. preferably non-invasive ones... please be detailed as I don't have much experience as a gear head..please also include if the modifications can be made by the dealer or any shop..

THANKS
g