I wish I had more to add. Again, this is page G-250 of the Studebaker Avanti Authenticity Manual under "64 Dealer Order Guide for Avanti". I have a 63 Avanti and I have put blinders on to anything other than that. It's kept me plenty occupied. I have a copy of the 63 order form and it's prior to R3 so it's not listed. It was only when I compared 63 & 64 order guides that I picked up an electric pump being offered as an option. Perhaps that was more forward thinking from Studebaker that they couldn't deliver on? Does anyone have a 64 order guide to look at?