$6500 for 120 kw. MMM I've only spent about $1500 on exhaust and intake to achieve close to that sort of figure. Depending on whether you want to go fast in a straight line and/ or around corners will determine where you spend it. Firstly get your intake and exhaust sorted. CES cat back and TRD CAI @$1500, Stock headers ported @$250-300,HD clutch and flywheel@$900, Unichip supplied and tuned @$1200.(these prices are roughly what I know/quoted.) Secondly suspension. Adjustable Koni's @$1100, Whiteline front and rear sway bars @$390,Whiteline camber bolts @$80-90,Whiteline strut brace@$160, TRD rear strut brace@$240, Fitting and wheel alignment @$650. This totals roughly $6340. So throw in some C-one wing tips and there's your $6500 spent modding your car to A) perform well, B)handle great and C) some nice wing tips for aesthetics :D