, i have the 4 10s on my 2wd short bed borla exhaust, flashpaq chip cold air induction ,and it hauls ass 400 hp at the motor with mods the chip plays with timming and remaps the computer and throw more fuel when needed and also you can change your shift points mine barks sec gear , and you can diagnose problems with the paq.i picked it up on ebay for 350 oh and it also lets it rev to 6k on shifts