What fuel cell fits nicely in the spare tire well 70 Dart?

If it's the same as a 70 Duster,this cell,which I took out and went back to the stock tank will fit. I can get specs off it when I go to the shop today if you like.

Also, since it was never going to be a permanent thing, I just pushed the plug out of the bottom and ran the hoses thru there. Here are some pics