DHP is a decent choice, but it is really a generic tune that isnt all that good. it adds timing and fueling, but ends up making the car run rich.

if you want something more based on what youve got then look to Will Overkill.

dont need to drop pullies, but why mod the car to support a smaller pulley and not do it? a 3.4 setup makes a world of difference as far as power from stock.