I searched but can't find anything. I'm in the middle of the rebuild and now have an Xcessive manifold and was thinking if I could run t.he 1000cc primaries from the two middle ports and the two 2000 cc from the outer ports. Not sure how I would plug the block primary ports. Anyone done this?

 

People have and I was personally going to do the same thing you're looking to do. Unless you're good with tuning I wouldn't do it though. Keep the primaries where they are.

 

What a clean engine bay it would be.

 

There's better ways of cleaning it up. I've built many parts that achieve this process.

 

you can get plugs from mazdatrix that block the primary fuel injector ports.