Quality cost money…. The blazer tank I’m using from TanksInc has a price tag around the 7’s. Luckily I got it for a smoking deal in the summit outlet. I think I’m in it 2 or less and it came with the fuel pump.
If I was in the market at this moment I would go with the Boyd’s. If I had to out a price on my time it would have been cheaper.
Post #7 here has a top view of the blazer tank install from Tanks Inc.
My setup looks a lot like yours, except I bought the 31 Gallon Blazer tank with sending unit, crossmember, straps, filler neck, and all stock sheetmetal components locally for $40. If anything fails or needs replacement.. I can just go into any parts store anywhere and buy an OEM 87-91 Blazer part and move on.
The boyds would be a good option if you are building a show car or something. I couldn't do the 19 gallon tank... 31 already feels like a stretch.
There's a thread on here somewhere from a few years ago that a member made one of those behind the light setups pretty easily but I can't seem to find it. I know there are several, but the one I'm thinking of was a red truck and it was burried about halfway through his build thread.