well, google should turn up sources of how to build a wet-plate camera, and stories (usually with photos) of people who built their own.
mostly, the back and plate holder will be the difference between wet-plate and other cameras due to ground glass needing to be in the same location as the film/plate. most everything else will be the same.
google books might turn up copies of Hasluck's Photographic Notes as well as Photographic Cameras and Accessories. both books were written by Paul Nooncree Hasluck. both provide valuable infomation rgarding building cameras, shutters, and other accessories.
Photographic Cameras and Accessories talks about partial plate, whole plate, studio plate, and ferrotype cameras.
Photographic Notes shows how to build a plate holder and darkslide along with shutter designs.