Ford ? Chevy.? Durant? Etc ?
I googled (brand X) wood kit a couple weeks ago and got several hits. I had a set of blueprints for A 23 model T I did several years ago, a lot of time on a band saw and sander. I have a 1917 Touring that was converted to a flat bed, A project one of my grandkids will probably have to restore. It only needs the back half of a kit. For my model T and A ford I have used Mac for parts, sacramento vintage ford has a large catalog lots of parts. my brother bought a lot from them for his A roadster. I don't know if anyone will sell you partial kits.