There's no kit, you'd have to swap out the regulator for the 70 bolt in style.
The other trick is to reglue the glass in the 69 regulator and add pieces of hose as a bumper to prevent the glass from being pulled off the regulator. Look here to see how it's done, see the 16th photo down on the page, Limited Edition 600 Restoration - Part 14
The other trick is to reglue the glass in the 69 regulator and add pieces of hose as a bumper to prevent the glass from being pulled off the regulator. Look here to see how it's done, see the 16th photo down on the page, Limited Edition 600 Restoration - Part 14