Looking for 70 Dart info with missing fender tag.
Unortunately without a build sheet or an IBM card or the window sticker you are most likely out of luck.
The vin will give you the engine, factory and a few more tidbits like if it was a high medium or low dollar car.
Basically without the other info, the build of the car is lost.
There are people who claim to I have the records but I would be sceptical if you need to plunk down hundreds to get it.