Highest flowing sbm heads?

car has several issues
1. only has 1 5/8 Doug’s headers on it
That issue I have a fix coming for
2. agree about lift, big issue, not using the heads, and the cam is already a bit little
gonna try 1.6 intake rockers, see if that shows anything…..don’t really want to invest in a roller, and don’t really want to chance breaking in another solid cam at this point ( and the icon flattops don’t have the deepest valve pockets to begin with) bandaid is about all I am gonna do in this area .

3. yes. Gonna freshen tranny, and while its out bump the vert up to 5400 ish.
thought about low gear set, but think bumping the vert up makes more sense..
I have a feeling these changes will make me happpier, fact is, it still has an 8.75 in it, put new Moser nodular case center in it last year, and am only foot braking it…but at some point….where do you stop with a street strip car….
Those are good moves. How much room left in those valve pockets, & how tight are they to the valves?