Hey, Im looking for some aftermarket upgrades for my 403. I had the engine rebuilt about 2 years ago. Its pretty much stock minus the .30 bored and comp cams rockers and a mild cam. . Im looking to do more to it to increase torque primarily. It also has some longtube hooker headers on it that may need to be replaced. and 2.5" flowmaster 40s. Im looking for anything right now to do the job. Please provide your knowledge!
