I guess I am part of the minority...I had a zzp dp and at a later date decided I wanted to do headers...never made much money back on DP because no one really wants them used...selling the plog shouldn't be a issue but I guess I don't understand why not running what you have so you can spend time and money on other stuff...SD headers do not just fly on the car not leak and have zero issues...guess for most people they want a specific whp so prob better listen to the pro's that have seen zero gains from Plog+DP...oh and the pro's will say xp cam only all day every day so better skip the VS lol