sorry, you may have to click on the thumnail and enlarge it when it opens.
I guess I was thinking something like this:
would let the rear rotate rearward on accel, but the 3rd bar from the frame (behind the rearend) to the pumpkin would basically push the rear end down as it was trying to rotate back into the 3rd bar.
I'm thinking of this from a circle tracker's perspective. I've raced circle track (dirt) for a few years before and I know like in a modified or late model upon acceleration the rearend will rotate rearwards, and is limited by the upper link/torque link, whatever you want to call it.
thanks for the replies. its just an idea that popped in my head and I thought I'd see what you all thought about it.