Hi Tav, M42 or M44 does not appear in my Challenger's broadcast sheet. SPD of my vert is A28, maybe later those codes might be included in the broadcast sheet?
That did cross my mind actually. Galen's white book shows that both codes were used in 1970, it just doesn't say if they were used on Challengers or if it was some other car. Possibly the codes started being used REALLY late in 70 production?
I think a more likely option is that the codes were used on some other mopar in 70, and not on Challengers.
A third option is that Galen is wrong, and the codes aren't used in 70 at all.
