Zach, i would be interested in them. i'm not far from you so if you need a tester for a set of springs let me know!!! i have comp 910's on these heads that are awaiting install on my truck, but if you make some that will be good for higher rpm and boost #'s i would be more than happy to try them out along with maybe a cam if you ever made some for the 7.3 guys. i remember you were talking about it at the buda dyno last year and you told me and one of my buddys we could test 'em we just never have torn our trucks down. Let me know!! :Cheer: