Stop in for a cup of coffee
I am going to do torque boxes too ....there again I think I will try to make my own.
US tool has them pre-made for like $250. I bet another 50-60 bucks worth the metal.
I am only going to do torque boxes on big block cars. really seem like a waste for a 340 or anything smaller than a 360. Really an 8 3/4 is a waste on a 340 when you really think about it.