I heard back from Brewers myself today that the spring is not available, and he does not replace them when he rebuilds them, as he reuses the original if it is there. Seems there is no exploded view of the shifter assembly as it was supplied by inland as a unit and replaced as a unit, but not internally serviced by MOPAR. So, i will get mine out of the evapo-rust and reassemble it and see if i can figure out the spring dimensions and maybe a replacement spring size on my own.