Take a look at my PM messages ford141 claims he has 16.5x9.75 and his fronts appear to be a deeper dish like the ones on the back of your truck...maybe they are different makes. Based on his pics they seem to be Superior Super Drag rims.
I have a question about those slots. It looks like those are different size rims on the back. Can you give me more information. I love the look and want to know what I'm looking for. BTW, I love the red in the slots. I have a red 74 CC and plan to get my slots powder coated red...will look bad ass.