Thank you Henry. I'm weighing out the pros and cons of spending the extra $6400 or so on a TRD Off-Road versus the SR5 4WD, so it helps to know that I can add a full size spare if I end up going SR5.
Is all of the necessary hardware available on the SR5 if you'd like to get your own full-size spare? It comes standard on the OR, but looking to see how easy or difficult it would be to attach to the SR5.