Yeah, I had no idea how much wire 4lbs was, so I picked up two. At least that means I can weld whatever else I need to until the owner of the welder asks for it back.

 

Even tough it works and it makes it sound quieter, let me tell you by experiece that I had used a thrush turbo muffler on one of my previous na fcs in place of the cat and after a couple of hard launches and going to the gears at high rps, the thrush muffler internals broke apart making it rattle constantly and anoyingly loud enough to hear inside the car. Now if you're not planning to drive it hard at all (never met an rx7 owner that doesn't) then you shuld be good.