Car Line - L Dart
Price Class - M Medium
Body Style - 23 2 dr. Hardtop
Engine - H 8-340 4 Bar. Carb.
Model Year - O 1970
Assembly Plant - R Windsor, Ont., Canada
The rest is production number....
Edit to add... If you don't have the fender tag then you're in the same boat I'm in where you're doing forensics as you go through the car and figuring out what happened over the years.....