Check thunder racing they have a setup for relocation brackets.

 

I bought center bolt valve covers and coil brackets from Pace Performance - very inexpensive. Used Patriot heads. No issues other than one of the coils on each side has to be rotated to mount on the new rack - no wiring required.

 

What could a ported perimeter bolt 853 flow?

Could it support a comp 224/224 565-565?

I've been told Dart 205's are where its at to get 400+ rwh &TQ

Dart seems to have less exaughast flow than the AFR and trick flow

 

In addition to valve covers/brackets, keep your pcv system in mind. There could be a possible difference on the routing of your hoses from your current set-up if you decide to keep it. Depends on the style of valve cover with regards to the location of valve cover vent fittings.

Assuming you also go with an LS6 intake you might consider the LS6 pcv conversion.

Good luck.