Made a template with 9 pieces of poster board, then cut out a piece of carpet. Now I just need to bind the edges and steam it to make it lay down good. Could have went with ACC carpet but it would have been about $350. I got 4 square yards from American Trim and Upholstery Supply for about $100. That's enough to do the floor, a big floor mat, and cover the panel I made to go behind the seat. Plus, the ACC stuff doesn't wrap down the step like I wanted. All I need is the thread now. (I'll get it at the same place...
http://www.atrim.com/ )