8-3/4 Differential Sure Grip Posi/66 tail light bezels

I am in the mid-west, in NW Iowa. Just bought a 65 Dart GT 6 cyl, and I have
all the engine, K-member frame, transmission, to convert to 8 cyl. I am looking for an 8-3/4 differential within driving distance from NW Iowa. Anyone out there who can help me with this. I am also looking for both passenger side tail light Bezels for a 66 Dodge Dart GT. PM me at Old Dart 66. Thanks in advance for your help, and for all the previous help on my 66 Dart project. The 66 should be done in about a month. Looking forward to posting the process to completion. Thanks again.