Are they the same?

i looking to buy new tubular upper control arms an im in need of the larger ball joint spindles from a 73-up A-body.My Q is i have a 72 Dart Had a 318/904/7 1/4,with a/c an stock drums in the front.I ordered and am curently running the willwood kit up front on the stock 72 small balljoint spindles,so i want to put some tubulars uppers on her an now i need to up size the spindles or drill them out.Are the spindle caliper braket holes the same on both the small an large spindles?I dont want to have to upgrade the brakes agian too:sad1:Thanks
MIKEY