I believe I stumbled upon a '68 or '69 Belvedere...

cosgig said

Both 69 Roadrunners that I parted out with the decor package were hardtops!!!

Click to expand...

The Décor package was optional with the Coupe.

The H2 seats, included in the Coupe Décor package, were standard in the HT.

HT = no Décor package as 'the package' contained things like the B pillar trim, that was not needed with the HT. It's inaccurate to say a HT had a Décor package.