While looking for additional info to add, I found a copy of a thread I printed off MOPARTS on 6/12/2003
reply posts by the "usual suspects": Y07_A66, ph23vo, 442w30, KISSAlien, Snoopy, worthywads & formula_s

Thread was started by MoparDanny, apparently he kicked his addiction and is no longer a user.
"70 Challenger 340 with N94 Option???"
VIN# JH23H0B405538
E55 D32 J45 J81 N94 R22 V98
was listed on ebay #2419085297 at the time

excerpt from a dealer memo:

4/13/70 ... The Challenger T/A Fiberglass Hood (N94) is now available on all Challenger models with 4-barrel engines. It cannot be ordered with the Shaker Hood, Moulding Group A (A63) or with the Special Edition models. The radio antenna will be mounted on the rear quarter panel as with the T/A Package. Because of the Dull Organisol Black finish, the Hood Performance Tape Treatment (V21) will not be available.

Per the memo 440 w/SIXPACK may be questionable 2-barrel(s), but I doubt it. It would also appear that a base Challenger JH23/27 with 383 4-barrel could've been ordered. The rear mounted antenna also may have been hit or miss. The two HEMI cars were radio-less when new, and if memory serves me right the 340 car 's antenna was on the front fender same as where my car's factory antenna hole is.