That 8 lug brake kit is outrageous! Jessee James had to use a gun to rob people! When we wanted disc brakes on the round track cars, we just clamped a caliper to the disc with air pressure, and built our own brackets to mount it. Find a disc that has the right back spacing for the spindle, pick a suitable caliper, and make your own mounting hardware.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!