Here at Ironworks Speed & Kustom we found a really nice set of valve covers to begin to sell in the pro-touring market. These things are awesome. The covers are machined from solid chucks of aluminum, no crap cast stuff here.
LSX Tall valve cover without coil brackets
LSX Tall Valve covers with coil brackets and available coil bracket covers.
The LS valve covers have an internal baffle to help keep oil out of the Breather lines and just air. Most covers on the market don't do this.
Big Block Valve Covers
For further pricing and info check out the Ironworks website.