i had tubular a arms built by byc.he made me mazda arms that were one inch shorter and have a toyota balljoint in them. so what i did was went to a junk yard and bought the hole hub assembley.which allowed me to use the toyota brakes.
yea, i doubt the mazda calipers bolt up to toyota spindles. and as far as the brake line goes, might have to run a toyota rubber line to the mazda hardline.