Yep, that's late enough for me. Is that the last day of production or something? Wow.
It's an SE, so there isn't an A63 code, but the M42 & M44 codes would have been there IF they were being used at the time. Since they're not, it's pretty safe to say NO M42 or M44 on 70 Challengers.
That's a REALLY nice car Randy! I don't think that I would have been able to sell something like that.