As I see it, there's two ways to build a Cobra.
1-old school with a FE or small blk Ford. 15" wheels & stuffing the wheel well with tire.
1- modern hot rod with a higher tech computerized 385 series or small blk and 17"-20" stuffing the wheel wells with wheel, not tire.
There's nothing with either, but I prefer old school "tough" looking Cobra over the "hot rod".
I went with the half polished (the full polished is too bright)15" wheels from Team 3, with their spinners and lug covers, which look great.
If I ever bought new wheels, I'd get their ET Trigo 427, as I like the flatter outer section.
ET Wheels by Team III Wheels
They now have them in 18".
With the 17" (+) make sure the wheels won't touch the brake calipers !