Trick flow heads how are they ?

Wow very impressive truck you have. What size header are you useing? I have Hooker super comp headers on mine. But they are only 1x5/8 tube. With the trick flows I was wondering if I would gain any by going to a 1x3/4 inch tube or maybe even a 1x7/8. But if I do it's going to have to be custom build.