Oh yeah and Im on super stock springs.
I always liked the idea of boxing the rear torque boxes. Im not worried about ounces or even a pound or two as long as I have reliability, efficiency and whatever just plain works better than it was.
As for the money its a long term hobby car so I put dollars into it every once in a while. I run it as is, then upgrade a part here and there, so its not a huge chunk all at once.
I dont think I'll go with a tublar K member but will end up with a fiberglass cowl hood so that should take some weight off the front.