My first Mopar. 67 Barracuda

the scarebird brakes went on very easily. the only thing that comes in the kit are brackets so you can mount late model calibers on them. I can't comment on the stopping differance because I haven't driven my car enough yet. I didn't have to send anything out, just mount the brackets, and remove the drum from the hub. Very simple and straight forward. The hardest part was removing the studs from the hubs. If you do it, the best way I found was to cut the swedge off the stud with a hack saw.