Rocker arms for 408 build

That is true, and neither does anyone else if they want correct geometry. That rocker doesn't exist, as I mentioned in my previous post. I can put just about any rocker on a head, as long as it will fit under the valve cover. Where it is located on the head is the key to proper geometry and operation.

I've done corrections to these heads using the shortest rockers I could find, and they still needed the studs relocated. The offset trunnions are the only thing that might work. I have viable options, but a bolt on rocker isn't one of them if it's going to be right.
For a street cruiser with a 5800 rpm target and lift of .525” max, doing stud relocation and/or using other specialized components, or any combination of fixes, is this common, recommended, something you or others well versed in these things advise and do as a matter of course? Seems to be way overkill in this case. Sure, if one wants to do that by all means, but using factory or the MP rocker setup? One would think at this level just using quality components, correct length pushrods and good assembly is all that is required?