[BoatBuilder3]

We have a local race shop that I tried to buy some box steel from. He informed me that most Nascar chassis only use .120" wall 2x4 box. He said 3/16" was overkill (made me feel good since this is a street car). Needless to say, he didn't have any 3/16" in stock and no plans to order any anytime soon.

I ended up locating some 3/16" wall material at a business that provides construction materials. They had about 4' of it in stock so I bought 2' of it. From the math I worked out, that would be enough with very minimal scrap left.

I also made a few trips to Northern Tool to pick up some welding supplies and things I needed to finish this job (welding rods, gloves, flapper wheels, grinding stones, sharpies, etc.)

The business next door does a lot of metal fabrication and said that I could have some scrap for free and he would help me cut it out into the shape I needed for the braces.

Advanced Metal Supplies - 24" of 2"x4"x3/16" box steel cost: $29.43
Northern Tool cost for welding supplies, etc.: $71.44
1/4" steel plate for inside bracing cost: FREE

TOTAL COBRA BUILD COST: $7,140.87