A heads up on aftermarket disc kits.
I bought an LBP 8.75 rear disc bracket kit from
@dodgedifferent2 that you, the end user, buy the readily available 94/04 Mustang rear calipers and rotors. Great service and price for the brackets and provided hardware. I gave less the $500 for all the parts for the complete conversion (conversion brackets, calipers, rotors, brake hoses and e brake hoses).