Those "threaded compression sleeve" type fittings are getting tougher to come by - especially when incorporated into a flex line, as on the 270.
Those are still available, although you do have to look a little harder. Here's an example
Link. You can also substitute fittings with separate compression ferrules, and once assembled, no one will know the difference. The only advantage of the rubber section is flexibility to make that connection, but like Jerry said, it's not really necessary. Standard copper tubing and the appropriate fittings will do just fine. Copper would be much easier to form over the timing cover than steel tubing.
