Howdy boyz Doing a 408 swap

I haVE AN 06 tb WITH A 5.3 ls BASED ENGINE. Wife blew the motor, gee darn, and I am going in with some sickness.LOL I will be, for the now, using the 5.3 heads and intake and a VERY mild cam.
Anyone have any advice as to what else I may need to do to make this work? I have built several of these engines inrace application in my WS6. I also would love to find some heaedrs for it. Where can I find a good used set?

I am calling this OPERATION HELL BLAZER!!!!!! The block will be here Monday. I believe I will be the only 408 TB in Oklahoma.

http://www.ls1tech.com/forums/dyno-b...ll-blazer.html

Build specs here.