This is going to sound weird but during my engine swap, somehow or another I knocked a very minute hole in my tranny pan. I was trying to replace it and ran across the same question, whether I had the deep or shallow pan. Even with my tranny pan in hand they could not tell me which I needed. They had neither in stock and no dimensions. We did however discover that the filters are different. I brought in my filter and compared it to the two they had in stock and determined that I had the shallow transmission pan by the filter.