need help with rim size on a 72 duster with b body rear

I have a 72 duster that I'm puting a B body 8 3/4 rear in and I'm not sure what cragar ss rims will fit. I wanna put a 15x6 or 15x7 on the rear. tire 225/70/r15 is what I want. heres the specs for the rims I was looking at just not sure what will fit. I wanna knw what will fit since the b body rear is longer and i'm not shortening it. thanks!


Size: 15'' x 6''
Bolt Circle: 5 x 4-1/2
Rear Spacing:</B> 3-3/8''</B>
Offset:</B> 00mm</B>
Size: 15'' x 6''
Bolt Circle: 5 x 4-1/2
Rear Spacing:</B> 2''</B>
Offset:</B> -38mm</B>
Size: 15'' x 7''
Bolt Circle: 5 x 4-1/2
Rear Spacing:</B> 4-1/8''</B>
Offset:</B> 3mm</B>
Size: 15'' x 7''
Bolt Circle: 5 x 4-1/2
Rear Spacing:</B> 2-1/4''</B>
Offset:</B> -44mm</B>