Pre purchase opinion on these tire and wheels used please

I have been looking for something different to put on my `67 Dart, and these used ones popped up for sale but offset looks wrong for me. He had them on a `72 mustang.
My Dart is BBP 8 3/4 drum with factory later model disc in front. No body or suspension mods. Not too worried about the tires but they look nice but mainly the wheels.

15x8
3.5 back spacing
245/60r15
8" wide tread
26" tall

15x7
3.5 back spacing
205/r15
7" wide thread
25" tall20210325_084850.jpg