I've got 25.7" up front and 26.7" in the rear, great fit on my '68 (trimmed inside lips for extra clearance). Dr Diff's old 4x 13" Cobra discs all around.
That's a sharp looking car. I also have my front and rear fender lips trimmed. I wish Toyo made the rear tire a bit taller, I like the look of the 27" tire on yours. We'll see this week how the rear fits.