I drive my truck every day on the street,tow,pull. I run a Silver Bullet 66. I havent had egt issues execpt when pullin that may be due to the cam but I dont know for sure since I built the motor all at once and have a 5spd. Does it smoke yes, but only when I want it to. And yes for it being a flatbed dually it will hold its own on the street.If you get a 66 make sure you specify that you want it to meet a 2.6 standard.

 

how do you think a S300 it a 66mm compressor and 77mm turbine will work it says it has a 1.20 A/R? im not realy worryed about the laggyness because its only goin to be for racing and pullin