I just bought a set, I was wondering if there is any way to tell the older ones apart from the newest ones? I was told the part #s stayed the same so that doesn't help... Also what was included in your box? I won't be installing for a little while so I want to make sure everything came. I received the 2 arms and a package(#67300)with 4 U shaped spacers. No bolts or other hardware.

Thanks guys

 

Hope this helps:

https://www.myg37.com/forums/brakes-...rom-spc-3.html