Saving for kids' college, so I'll be looking for quite some time.
But since you asked:
true CS / no clones: Pres. Blue w / bucket seats + head rests, both consoles, deluxe belts, AC, 302, GT logo wheels. (I would be OK with these interior upgrades / deviations from the Marti report as I would want it as I would have ordered it - I know this may cause some pure-ist heart burn somewhere)
Stero, power windows + locks, drivetrain, brakes and suspension would be the mods "not OE" I would consider as acceptable. (more heartburn)
Must be the stock body look!
Need a driver - not a trailer queen.
Condition: restored
I would need contract out a rebuild as I do not I have the skill set.
Of course, I just watched a cool episode of Inside West Coast Customs where they took a 2012 Mustang and stuck a Dynacorn 68 fastback body on it. Too bad Dynacorn does not make a coupe.