Bill -
The reason I haven't been able to send you a good shot of my linkage is that I used the other bellcrank mounting spot just forward of the one cujo8 used. This puts the linkage behind the headers and exhaust pipes, but it gives you a more straight shot down through the intake and the headers to the bell crank. I made my own using aluminum rod and I used a die to thread it as necessay. I also used a tie rod end on the long rod from the pedal so it would move more free. I cut the rod and added that end. It moves very free and that in itself allowed me the ability to use a smaller spring. The other thing that causes tightness is the binding of the mechanism. The real secret to a good linkage is to build it so it doesn't bind, which I found to be pretty challenging. With a large spring, you almost have to stand on the accelerator to get it to push down, but will work even if there is a bind in the linkage. I'm using a normal chrome spring. It moves very easy. As I mentioned earlier, it did come loose at the spot where the tie rod bolts to the bell crank. If I was to do it again, and now I might, instead of a tie rod end at the bellcrank, I might use something that doesn't wobble as much. It tends to allow the gas pedal to lay over some. A heim end may work better at the end of the rod to the pedal.
I send all of these comments to you with the idea that I think you will have to build your linkage to get what you are after. I hope some of these tips help you!
Joe
