Forgive me if this has been covered elsewhere, but I couldn't find anything so here goes....what equipment, (other than a stripe, lack of trim, engine code) differentiated a Super Bee from a standard Coronet in 1968?

Rallye dash

Grille & tail blackout, Bee decals & badging, domed R/T-style hood, deluxe (not base-level) interior, HD suspension, 11" brakes, 335-horse 383, Rallye dash/Charger gauges as mentioned. Can't recall if there was a stainless cap on the B-pillar like RR Decor coupes. My buddy's had the small wrinkle-finish air cleaner, can't recall if it had the pie plate.

A lot more than a dash. Big brakes, HD suspension, dual exhaust, induction and maybe more than that. A standard B body started life out as a 318 body with provisions for a single exhaust pipe, the other pipe was added after the fact. Yes, you could order the other stuff, but you said a standard Coronet.

Were all 68 Bees post cars?

How do you identify the HD suspension?

Torsion bar diameter and rear leaf spring part#, which is stamped into a bottom leaf. Shiok absorber part # too, though the originals are probably long gone.
Bear in mind though that HD suspension & 11" brakes could be optioned on most anything short of Hemi cars; I once owned a '70 Satellite wagon that was ordered by the original owner as though it was a Road Runner. It had the 11" brakes, HD susp, and the normal 383 4-barrel.
Looking at your other post, it seems your car is a legit Bee, only with a curious scheduled production date, which like I said is interesting; it shouldn't detract from your enjoyment of the car, it rather sets it apart.

Induction ?

All 68 B bodies have the provisions for dual exhaust, 4 dimples in the floor where the holes are stamped out , or drilled , for the added bolt on plate , only the right side bracket was welded on ... but you knew that ...

If this is connected to your other thread & the car was a very early version, you may find many things that are not 'normal' to later cars.

Thank you everyone, just wanting to expand my knowledge. The mechanic who first looked at my car noted the rear springs which were stacked on one side. (right if I recall) It also has the larger 11inch brakes and a tach. Seems to have much of what you all are describing.

the VIN LOL

In 1968, the base Coronet was the Coronet Deluxe.

OK, Diego, I'll be more specific: there was a base interior like the Bel/RR on the basic Coronet coupe - a buddy's Dad had one new off the lot we used to cruise in - and then there was the 440 level.
SuperBees got the 440 level.