[Tyson Schmidt]

If you do the mod we did above, you don't need to change it back to put on your original exhaust for the inspection. It's a good idea to add a rubber coated support clamp to support the line like we did. (shown in first photo.)

There are no other oil lines to get if you do this mod. So yes, you can do it without buying any oil lines. (But I have to say for the record, I officially recommend backdating the oil lines. It's just more sanitary.)

Bill has a good point about the oil cooling. Here in the Northwest, that's a non-issue though, luckily. Also, losing the original Catalyst exhaust will cool things down all on its own. And of course, there's the weight savings!