Personally, I'd still call it a C30 project. It's got parts from a C-10 and C-20. So C30 it stays
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Nah dad and I kinda already figured this out after we looked at the the SPID. This truck was probably a 3/4 ton and a half ton cab was thrown on it and front clip. The cab supports looked like they were in real good shape, too good for an original. For whatever reason, the C30 badge was put on, but oh well. Still an awesome truck and great place to start.