Wista M450 6x6 lens board equivalent?

[clayne]

I see someone else has asked this in the past:

http://photo.net/large-format-photography-forum/00GenN

However, even though it's a 6x6 board with rounded corners, I'm having difficulty locating a similar board of the same size/rounded that also utilizes concave/lipped edges for a flush mount against the standard (basically stamped metal). I've been through SKG's site already - but maybe I'm missing it. I would have thought Calumet C1, but that's not gonna be flush. It's just like a Graflex SG/CG board, only 6x6.

Anyone know?

Edit: Just noticed that the Toyo View board is basically the exact same design, but is 158mm rather than 153mm. So close yet so far.