I have to say for the record I have a '68 Firebird 350 without AC and the PHS docs to back it up that match everything. It has #6 & #8 - 99% sure original items based on the clips, rust and paint (car had never been restored and sat for about 30yrs).
#6 & #8 also came with manual trans.
But I agree with your statement as well. My wife's '68 350 with auto came with #6 and #8. First one I ever saw like that.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold