Are Outer Wheelhouse the same for 67-69 Valiants and Darts?

FM3 Dart said
Valiants have their own outer wheelhouse. Not the same as Dart. No outer wheelhouses are available for Valiants.
FYI, 67-69 Barracudas and 70-76 Dusters/Demon/ Dart Sports use the same outer wheelhouse.

Thanks FM3, for the unequivocal response! That's good information. That's what I thought but I wasn't sure. I appreciate you chiming in.