I’m going to try and order seats soon for my ‘66 coupe. I’m looking at ideas for a good dual use seat that will allow backseat access while also working with harness/daily comfort and holding me in the seat on the track. I had considered the idea of just getting the TMI kit with headrests and extra bolstering. They look nice and seem to fit the bill. I’ve also considered doing a Kirkey GT 350R seat on driver side only and a folding seat on the passenger side for a for mentioned access. I don’t know anyone with those racing seats to test for comfort however. If someone has the low back Shelby type seats how comfortable do you feel they are for road trips/ daily comfort?