Just double checking to make sure there isn’t some commin knowledge thing I missed.

Just bought a pair of stealths along with the 10 degree retailers and locks,composite .0:39 head gaskets,the better seals and the head bolts with washers needed for their heads.
Bolting a performer RPM to them and still deciding on headers.

I used to use a steel shim felpro header gasket back in the day for headers,any reason not to with aluminum?

Am I missing anything going from 906s to the Stealths?