[robnolimit]

The floor of the JT is all original parts, just raised 4", and it's heavy. You can use .065 wall, as long as you don't drop an engine block on it. Not sue tying the rockers in would help that much, but then again, any little bit helps. 1rst to 2nd in charlotte was .039 sec. If you want to get really trick, form all of your mounts and bracing with .040 aluminum.