No, and I probably won't by much. Besides being FWD the Bonnie was a well suited platform for what I was after. A good looking car with a TON of creature comforts and gadgets, and when I wanna get on the gas it'll blow away most of whats sitting next to me. It needed some help on the latter part, which I helped it with.
Really though considering the lack of lightweight aftermarket parts for our cars, and the fact that putting racing seats in a bonnie would probably look funny, I would say focus on the engine HP more than weight. Save weight where you can, but I'm not sure I'd bother trying to replace a ton of parts...would be cool if ya did though