Thank you all for your replies. Have given some thought to this, and for originalities sake, I think I’ll install the vent nipple into the filler neck (already have an aftermarket tank as the original was damaged). However the picture JamesM put up seems to show it in a different location than my original tank. If looking from the rear, the nipple on my original has it at about the ten o’clock position. Looks like it’ll line up good with the tube to the trunk from there. What do other 69s have?