car-part.com may help. You may find some yards in your area that have newer trucks. I'd also check Craigslist. Do a search using "parting" and Silverado under auto parts.
2013 26BH ghetto model w/ 4 plain rims and some rust
2001 Silverado 2500HD 6.0 gasser
I have a fever...and the only cure is more camping!