It would appear DV hasn’t done a lot of tune up work on 60’s era Mopars.
Quite a few used TDC as the spec for timing at idle...... and there are also some that use 2-5deg ATDC.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads