do you have enough room to run a watts linkage . invented by james watt of steam engine fame 150 years ago the rear end has a pivot pin attached. a horizontal link runs to a vertical rocker arm that pivots on rear end the other end of the rocker has another horizontal link one horizontal link high one low attach to opposite frame rails. the rear end moves only up and down not side to side i think speedway motors has them in their catalog a single panard bar works on track cars because most go in circles and rear end push can help you corner if it;s set up right