340 4 sp cars should have torque boxes front and rear ( although some slipped through with only rears) , HD springs , HD torsion bars , sway bar , front discs , HD clutch pedal , HD K-member w/ coin, bigger radiator , 3.23 or 3.55 gears .
Look thru this
The 1970 Hamtramck Registry - 1970 Dodge Dealership Data Book - (Old Pages) - Dart