I probably got at least $900 in my 596 heads that I originally put on my duster when I had the stroker motor put together.. then I bought the speedmaster heads and they had some kind of weird September sale a few years ago for like $800 to the door and I wasn't sure if they're going to have the Black Friday sale so I pulled the trigger for 800. Put those on my duster and then when I built the stroker motor for the power wagon I had those 596 is on the shelf so I went ahead and used them again... W2's or trick flows are completely out of the question for me... The 410 and the 408 with near factory heads has way more power than anybody sould need on the street... My next build is going to be at 440 stroker, we'll see where that goes but still won't be able to afford trickflows...