The differences in the seats may look small, but the performance difference is actually considerable. I dont have real thick legs but my problem with the SRDs was never upper shoulder support but was around my legs. The Speeds hold much tighter here and I donít need to brace my legs as much in turns. Even though the Speeds have less pronounced shoulder supports I could not notice any difference there. Originally these seats were supposed to be for my dads car but the added support helped so much I swapped him my SRDs
It should be possible to swap a Speed lower half to an SRD no problem. The seat is 2 piece and I believe with some work you can dismantle the hinge.
Stan, I have never heard of those seats, they look really nice. Very pronounced lower supports. Do you have the price per seat and what can be done as far as sliders and mounting them?