Here is the original .
https://forum.ih8mud.com/80-series-tech/231850-another-roof-rack-build.html
I modified it for my RTT.
I think you could prolly talk me into helping you out. For the gutter mounts see "themule" (he is a vendor on mud).
I built mine out of stainless but it was a pain and I dont think Knox Mountain metal has any left.
Knox mountain metal is the place to find your build starting point, cruise around until you find somthing that resembles a rack and modify it

Steel is easy, you just have to powdercoat it after.
We should have a pre-construction meeting...actually we need to have another club meeting anyhow, we could talk then and you could see mine up close. Are you in a rush or is it one of those things on your wish-list?