Recommend Performance Shop

I know that advertising here is not allowed... and I would think this might not count... I apologize if anyone thinks it does...

But I would like to locate a builder or shop in Colorado that can soop up my 03 Silverado, and later my Impala. I want something like I see on Overhaulin, but not a ground-up restoration. Just some engine upfgrades, maybe a turbo, or some sort of performance additions.

Are there any shops that do that stuff? I can't find ANY online.

Send me a note privately if you don't feel like posting business names or lilnks here in the forum.

Thanks!