First, get that thing out of the backyard! Then get your hands on the '70 Service Manual and you will have most of what you will need for maintenance. Most of all... drive that thing Man!! I have a 5 series BMW and a Porsche 928, but nothing puts a grin on my face more than my '69 S with a 455 4 spd 3.91 gears!
GOONNEE!