I had one of the smaller diameter boosters sitting around with some old truck stuff for a few years. Not sure if I still have it or if I tossed it. I had a '77 with a 440 in it for a few years so I collected some of those parts. I converted mine over to the one ton front suspension and installed new wiring harnesses and all of that stuff when I rebuilt the engine. You can make the oil tube pretty easily. The lower fitting is just a flare fitting so you can use a length of brake line. Just bend it so it fits and then cut it to length for the dipstick.