I finished building a DZ60 a couple of days ago -- and just got the layout programmed this morning, thanks to help from TalkingTree.
Of the three plate options shown on that page, I think the "Plate B" steel option is the one you want. That 2.25x left shift is the standard size. Incidentally, I bought my DZ60 PCB through eBay, and the listing said nothing about it coming with any plate. It did come with one, which I think must be the Plate B. Photo here. . .
http://zobeid.zapto.org/image/keeb/Zo64-02.jpgOne on top is the DZ60 plate, and the one on the bottom is the Banana Split 60 plate that I had originally intended to use. The DZ60 plate was better so I went with that.
Finished product. . .
http://zobeid.zapto.org/image/keeb/Zo64-05.jpgNever mind the ugly-ass keycaps, they are temporary and will be replaced RSN.
Split space bar was a priority for me, and the DZ60 is one of only a couple of PCBs that supported this layout. (The Banana Split is the other, but it's between production runs now.) However, if it's standard keyset compatibility you want, you could put a 6.25x space bar there and a normal 2x backspace, and you would have a bog standard 60% layout.
Also worth mention, the PCB does have RGB underglow pre-installed, and you can add your own LED backlighting to the key switches when you put them in. I put white 2x3x4mm LEDs on all mine -- they were a bit of a pain with tiny soldering points, but they all work OK. By default the one on the Caps Lock key works as an indicator.