ive run the isky "mega" series with great results in a street car.if you want choppy idle,streetability ,and power the 280 mega would be my choice out of whats been listed.its an older design and probably wont make as much power as some of the others listed,but it will do what your asking for.its a difficult decision based on all the different grinds on the market,and we all have an opinion on the subject.