It is easy enough to swap lens boards. At least the Technika/Wista type is widely used so someone is always looking for one if you wide up with spares. The Calumet board is fairly simple to fabricate, I believe. For hole sizes, see http://www.largeformatphotography.in...ole_sizes.html

I don't recall seeing a single reference for camera and lens board compatibility. You can use a Wista board on an MPP Technical up to Mark VII, but there is a risk of light leak if you don't back it with felt, for example.

Graham