Diablo Puck/Predator stack, had on my truck for ~4000 miles. Only turned up once for a dyno event. I made 462/816 with this stack ONLY( plus boost fooler), no other supporting mods at all. The Puck has probibally only been used for ~200 or less miles but was installed the whole time the Predator was installed. $350 firm if shipped free, other offers considered if buyer pays shipping. I will ship FREE to anywhere in the US except Alaska and Hawaii. Email for pictures and dyno chart if wanted.