Regrettably, as do other fond memories, time changes things. I'll save my Yvonne stories for the campfire ... after Kathi goes to bed.
WRT roads in the SE USA, the Appalachian Development Highway System (ADHS) has “improved” many of the roads we all so fondly (or not) remember from twisting, tummy-tickling (or worse) back-seat-riding experiences to dull straights. Mighty fine for the locals and farm-to-market needs, but painful to ride as they are often 4-lane slabs.
My map was a quick look; "needs work."
Before you all head up 25 or any other roads that way, recommend a google-maps recon. There are many — MANY — great roads in Kentucky, but some now make I-75 seem interesting.
Bill