Thanks guys. I was hoping to only spend about 25 hundred total. There is a local guy that wants 8 to 10 grand. I can weld, but my buddy is an excellent welder. He does it for a living and has also welded circle track cages. here's a link to S&W's set up. I'm not sure if it comes with the housing though.
http://www.swracecars.com/rearframes.asp#64