Port my current M1 single plane or install the RPM Air Gap?

Here's a thread showing someone welding up a M1: Fixed my M1 / Strip Dominator
That is the direction I'd like to go, along with having my Eddie's ported, not for all out power but to optimize what is there. I mean who doesn't want another twenty Clydesdales and Twenty Thoroughbreds across the field of revs. It ran crisp, very responsive in a gear or two up from what you would expect it to be happy. When I asked this question I was certain someone would have had real world back to back knowledge maybe even dyno numbers. Thanks again for that link.