I have a diamond plate top and bottom I got direct from Mesa back in 92 when they had a satellite office in Rockaway. The top was actually the prototype diamond plate and the bottom was the first few made. This was before there were 2 sizes of Recto Cab. The V30s in them are extremely broken in and are very smooth in the upper mids and not harsh on top. I cracked the backs on them to take pics years ago and I'll post em if I can find them. Tried pulling the handles off but it was just about impossible with the D. Plate. Back was a pain in the ass to open as some of the plate overlapped. These I will take to my grave as they sound that good.