disks outside the box

ok so I want to switch to bbp front disks (gotta match the soon to be bbp of the rear). I've been scrounging the parts yards and the only pre 90 mopars i could find are a 88 d50 and a couple old vans. Are there any non mopar cars that i can use to make parts fit? I'm really not tryin to spend over $500 on a "kit". At that point I would rather just rebuild my drums and weld my 7 1/4.

I have heard that mustang spindles will bolt onto lbj control arms. Anyone have first hand experience on that? Anyone have any other thoughts that might work? And I just so happen to have plenty of time to sit in the junk yard with a measuring tape i'm just not 100% sure on what i should be looking for.

P.S. I currently DD my 73 Dart Custom so I kinda don't have opportunity to tear it apart and measure everything. And I don't plan on starting to tear it apart until i have everything I "think" I will need.