I have done ZERO experimenting with rear discs. I have many of the parts needed to do a full float rear axle. I'd love to install rear discs but the parking brake is always an issue. I don't like the driveline brake option.
I see FROR has a kit that uses FJ Cruiser calipers with the drum/rotors...
Never heard of them. Thanks for posting. Not having a parking brake is the main reason I haven't gone with rear discs. It would be nice to know what the calipers are from if OEM.