SM Head Modifications on a budget

Have we reached a point where the thinking is that the 285-290 number isn’t going to materialize by employing simple diyer friendly mods?

I thought my target was 275-280 but I may be wrong. I don’t like a couple mods he made but that happens. I hope he learned a few things number one being save that one inch sanding roll for fab jobs in the shop. I don’t like how he did some slight short side shaping on the common wall side as it directs the airflow into the cylinder wall instead of bore center. This is one of the main reasons I attack the bolt bulge. It allows me room to stay wide and direct the airflow center bore. Laying down the corners of the short side floors corners allows you to shape things. You can see that on the chamber pictures I asked for. So yes I was hoping for higher numbers for those at home hoping to do a few mods to gain a few more horsepower. I would have really liked to see what a gasket matched single plane would have done but that’s not going to happen.