I have an ugly 2x3 speed graphic thats been sitting around. If I remember correctly, it has a spring back, but you can modify it pretty easily for a roll film holder. it has an older style front standard which uses 1/8 inch thick lensboards instead of the newer molded sheet metal boards.
If you are interested I would let it go for $20 plus shipping. I could probably hook you up with a lens and roll film holder for another $30, but I will have to check on the availability on the roll film holder.