Copo-rat,
Dividers are easy to make just cut a cardboard template that fits the port and cut out a piece of steel held in by a bolt or tapered plug in the top of the bolt boss, I have been dividing ports since about 1965, used cast iron crank counter weights furnace brazed in to use the stock bolt, cut steel flat plates bolted in, cast steel wing shaped dividers that bolt in, the same cast wing that goes behind the stock boss that is tacked welded and epoxied in place, all work just fine.
Tom, Very innovative idea of opening the top of the port, have you tried to see what the flow is, how thick do you think the port is afterwards, you should sonic test it. How wide is it at the top now that it's ported ?
Harry
