I've been doing a little research regarding the ULF rail based cameras people are putting together out there. Most of the cameras seem to start with a Sinar P2 as a donor and then the appropriate format back is added. http://www.glennview.com/ has a kit for the format size I'm interested in with some posted pictures and I am aware there is a guy who made an 8x20 using a rail base design posted over on http://www.mamutphoto.com/

Are there any members that have used or made something like this? Does the donor rail camera need to be a Sinar or are they the best candidate do to there beefy design?

Any comments would be helpful.