Disc brake conversion on small bolt pattern Cragars

I got a pair of 15x8 small bolt pattern Cragar mags from Summit that take the standard 1/2 long Shank sst style 7/16 lug nuts like old style ...not the conical seat....but did have flat spokes instead of round....they set perfect with a 275/60 under the wheel lip.up front 14×6 with no spacers