I had extra crossmember under my panel
They were for mounting the spare tire holder.
Ah! Thank you! That would make sense now!
In other news, the company "Tanks Inc" apparently has a 1956 Chevy Panel truck, and they used one of their universal tanks on that truck. I've asked for them to send me pics/info of how they set it up, and I will happily mirror that. Funny how it's a tank shop, and they couldn't just create a new tank specifically for that vehicle, lol.
