Hi all, been a while since I have been around. I hope everyone is doing well. I come today needing some help. I just picked up a 1966 Chrysler 300 2dr hardtop. The car is missing the fender tag but has the certicard. I understand the top line fine but parts of the second line have me stumped and I can not seem to find the info anywhere. If someone could decode this for me I would apreciate it.

M4R WWI T5(auto trans) SG(sure grip) 070I