906 or 915 ?

I have seen/tested 906’s that flow good numbers with the SSR still fairly tall and not laid back much........ but I’ve never had any success with that approach myself.
If I’m looking for a pretty big number....... I end up having to lay the SSR back pretty far.

It takes me about 2hrs to do one 906 intake port that will get into the 280cfm range.
About 1/2 hour less for the later heads to that same flow level.

I went thru this thread and skimmed thru my previous posts.
Looks like I’m repeating myself on a few posts.