Pro Touring 10K

I agree 27-28 tall tires that are wide are far and few between. That seems to be the problem I'm facing right now. The other set of Mickey Thompsoms I ordered this morning are 26x12x18 Overall Diamater shows 26.4. So not as tall as I would like. We will see how they look tomorrow.
It is surprising to me how few selections there are for a wide tire in a 27"+ diameter. I searched high and low for a 28" diameter tire that was about 12" wide. The only choices you have are a drag radial which is not exactly what I had in mind. I even contacted BFG to inquire about tires in that size (and I received no help ) and apparently the size I did end up with (285-40-18 = 27" x 11.2") has been discontinued. Don't 60's & 70's muscle cars need a taller wide tire?