the a3000 does not have a wastegate. it is sized to not need it. this is a very bad choice for you. you will loose a lot of your low end low rpm torque. you tow like me and i had a a3000 on my truck for one long trip and seen i made a very big mistake. for your truck and the way you have it setup go with a htt 62 65 12 or the bd b turbo