I just realized these were here. It's so nice looking, but I think I agree with Madis, the 3mm wall thickness seems very weak. I'm not sure what stocks are but since it is the same material I would say to make it much thicker than stock razor. I don't know anything about that though, I'm just speculating. Another thing, possibly put two plates over that gap, I did it with ramps I was building and it kept it extremely rigid. The gap in the center might save weight too. The machining would probably be a lot more though. Again, just speculating (as usual, because I know NOTHING).