A couple of friends have installed the 4 & 6 piston calipers and have reused the bolts, no issues whatsoever. I'd reuse them too if they look good, maybe put some blue thread lock.
In case you decide to purchase them:
part number is W716471S439...
Try loading this ACM as built data:
https://easyupload.io/uvasvj
load it with forscan or open it with note pad and manually input the codes.
also, some APIMS have a bug with incoming calls, in the SYNC 3 menu go to PHONE and change ringtone type to: "use phone ringtone"
Great info.
The connector to the car is this one:
WPT-1037 (Ford 1U2Z-14S411-BLB)
to the tail light, the "Toyota 8-way connector" works as @liquidscope29 said.