TCI uses 3/4" x 2" x 1/8" box tube to form their x-members or center crossmembers in their chassis. Does anyone know where I can buy this material, other than from TCI? I have checked all of my outlets here in Colorado Springs and Denver to no avail.
Guys on the Jockey Journal have said your metal options suck down there. I find this hard to believe.
Try metalsdepot.com. They seem to have many different sizes of rec and square tubing, one may work for you. I have ordered quite a few pieces from them. On one order a piece was lost in shipping, they sent me a new one the next day at no charge, A+ on service. There are no businesses around here that carry odd sizes so it has been a helpful source. Good Luck!!
EMJ shows it in the book I have. It is .120 wall. I don't know if they are in your area? http://www.emjmetals.com/