Matto is correct on the size, poston has it just make sure you specify the year when ordering. You can get a really nice braided oil return line from Eastern though you might want to look in to. (Eastern also carrys a stainless stocker feed line you need which is a really nice replacement) The stocker oil feed line from eastern is part number turo72 for the stainless feed line. And part number turo84 is the return line. Number for Eastern is 610-970-8944. Case you need it.
Jamie