a AFR gauge is a must, when u get it ,u may have to remove your fuel/filter/regulator (all in one)and put in a adjustable fuel regulator don;t forget it will not work with a return line then u can replace your lower crank pulley with a 180 or 178 along with your SC pulley and get about another 40 to 60 HP with the afr guage the best number for the street is 12.3 remember you are only at 12.3 at wot in 3 ,,4,,and 5 gear