As it turns out, I am building two motors at once (three if you consider the new TU K1 rods that are going into the GLHS ) Both heads were back from the shop today after dissasembly, cleaning and some rough machining. So before I sat down with the die grinder this afternoon I took a few pics of them side by side.
A few things stand out for sure. The TIII head is positively portly in size and weight compared to the Masi. Placing the cams to the side instead of over the valves make the TIII much thinner than the Masi. The TIII head 'out of the box' needs less cutting to get it where I want it to be, after only 4 hours or so on the TIII, I am 1/3 done with it The Masi Heads take so much more work to get the numbers...