Thanks for those measurements 180 and the info on the depth micrometer. This OEM pulley is presently stuck on the shaft pretty good and I am going to have to devise a two-halfved grooved wrap around puller of some sort to get it off without damaging it. I somehow didn't stop my mechanic when I noticed him not emory clothing or lightly oiling the shaft before assembly and it went on tight.This may or may not be related to the excessive gap that I ended up with. The videos I have seen of pulley removal and reinstallation show the assembly going together like butter.
I will add that I drove my other (stock pulley)SRT (black one ) this morning to notice any differences, and I am beginning to think that the replaced SC (on the SSB) is definitely engaging differently and quite possibly slipping. There is a noticeable difference in power predominately in the 1500 to 2500 rpm range comparing the two. Also, comparing the two mating surfaces of the failed pulley to the used OEM pulley, I noticed a different angle of bevel to the outer edge which may have given me the indication of wear on the used OEM pulley when the non beveled portion may be the correct thickness. Either way, the replaced pulley will need to come off and the oversized gap issue addressed. I will be using the failed pulley and its grooves to help in the design of the puller I will need to get the replaced OEM off of the shaft. I used the bearing that was recommended by NW. Was it too thick? I no longer have the box it came in I will have to check the invoice to see exactly which bearing he shipped to see if a mistake was made. I'll let you know...thanks again.