Replacement panels ?

[Stock 87]

Who's making the highest quality rockers, cab corners and outer floor sections? I see some price differences through the vendors. Are they getting the parts from the same supplier? No manufactures are listed on any of the sites.
Reason i'm asking is I need to complete some rust repairs on a 71 step-side prior to my LS swap. I'd like to use the highest quality parts/fitment I can get.

I been spoiled doing a restoration on a 69 Mustang. Dynacorn makes parts for them that are of unreal quality. After working with top notch parts i don't want to be playing with sub-par replacements on my Chevy.

[72_swb]

tri plus seams to be making good stuff. My front header panel and cross sills fit perfect.

[GR8-68]

Almost all of these panels are made by the same company so good luck with any different quality, I realized this when I bought my rear wheel wells and it had a triplus sticker a goodmark sticker and a key parts sticker on the same wheel well

[boostedc10]

Get a hold of Nsanehotrodz on the boards. DeWayne is a great guy and uses all the metal he sells on his projects and customer cars. http://www.nsanehotrodz.com/

What I found is following the manufactures isn't the best way to get the better sheet metal. You need to get it from guys that use it and see issues first hand. They do the hard work of trying the stuff currently available to get the best fit.