Edelbrock do a whole package that includes thier manifold, the MSD controller (rebadged with edelbrock) and a wiring loom for the coils.
Check out the test that Super Chevy magazine did on one.
LS1 Carb article
My injection setup ran flawlessly at Winton. However I have no basis for comparison between the manifold setups.
I can't get over how much power this thing makes. It was frighteningly fast in my inexperienced hands. I started out in a slower group because no one knew how the car would run. I found I was catching and passing many of the cars in my group and I think it was more down to straight line speed than my ability to turn corners. I got a run in another group later and caught and passed several of them too. It should pull some good lap times when I learn how to stop and turn corners.
I still feel like bursting into maniacal laughter thinking about it.
Cheers