Seems how this topics gone left, I will bring up this point of order! As for your arms that you're looking for I'll give you this bit of knowledge. The arms on my 300 look like polished stainless or chrome, while my brothers 66-300 had a brushed aluminum look to them. I don't know if his were changed as he was the 3rd owner, I'm the 2nd owner and knew the original owner and know that they weren't changed as where my brother's could've been? I Don't know if shiny wipers were a option in 66 or not?? Good Luck