70 dart 340-4 speed numbers matching................convertable?

my problem with starting with a /6 is that i would still have to use all the numbers correct stuff off this 340 car anyway....... so, i figured may as well use it all, so i do not have to hunt up another car.

and this one has entire new metal from front to back, mini tubbed profeshionally, and all the metal work is done minus frame connectors