The line is a 1-piece setup from the oil distributor near the exhaust pipe to the valve lifter area on the opposite side of the block. It goes through the water jacket on the way, so it must be sealed. The fittings in the block the line goes through have compression-type ferrules that are one-time use items. If you want to replace the line, most of the antique parts distributors have a kit available that includes a line the right size and the necessary fittings to do the job. You only get one chance to do it right.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!