I never understand why you guys who run o/r h-pipes on the street don't just fab up some cat shells so the cops can look at 'em and you can can tell 'em, "no, that's not an o/r pipe, ossifer, i got me some high-flow cats in there!"
If you're 17, my suggestion is to learn to drive first. This is not a facetious comment. You will thank me and your parents and their insurance company will thank you.
Plus, gear oil stinks to high heaven. :)
If you get the Cobra fronts you might as well get a kit, and they usually include lines and banjo bolts and crush washers. At least the one from mustangparts does.
If you're looking for some bling, these rotors are what you want. If you care at all about the lifespan of your rotors, then forget about these.
What's a little rust, anyway?