Quicksilver,
There is/was a NOS Tahitian red striped 75 model tank being offered on ebay just the other day. It may have ended or is about to. The pic looked pretty good as I recall. I thought $300 was high, but the way things are going, a year from now the value will probably double or triple. It's certainly up to you, but the only thing that would cause me to use the green was if I was running a stock pipe, which was only made for the 74 model.