Talk to Richard @ WCCH about how much it will help. I'm sure it'll be a worthy improvement. In fact for the 5.3 if u do his Edelbrock ported heads and a GT2-3 cam with the 122 u shud be able to get ~400rwhp...so on the 6L it shud be at least as good! Do a search on the site and see what others are getting. As for the Snow kit, I'd go with the AlkyControl. Washer fluid really doesn't do much. It doesn't allow that much more timing or cooling compared to 100% meth (Snow kits can't run 100%). I just came out the other side of that experience. Price wise 100% meth costs anywhere from 2-4x wiper fluid. R/

 

I don't know how much power you'll make really. I was just giving you my old truck setup as an example. It was a bone stock LQ9 with dynatech headers. It made about 7.5psi with the 3" pulley.

Some of the guys that have done heads/cam on a 6.0L with the radix would be better to speak about power output than me. Alot of those guys are down in the mid twelves and even in the high 11's in similiar trucks to my old one so they are definately making a lot more power than my old setup was.

Hope that clears up my post some.