[Gunner]

It was my first thought that you have "too much clutch." These cars don't need the heavy, high-grip clutches that 3500-4000 pound muscle cars do. A relatively light street clutch (like a Centerforce I) will do fine; if there's slippage needed, it will happen at the rear wheels.

You might just go right to the source of the trouble and put in a proper clutch. Trying to compensate with all new linkage would be almost as expensive and just as much trouble.