cease4

Wat do u guys recommend to put on a 99 cobra??? Would anything pretty much make a difference??

handyandy

I dont have a cobra but IMO spark plugs are spark plugs. Get some platinums or anything that will last long. Copper = Less resistance = more spark, big deal. All that means is that you get to change them more often than a platinum. I don't think that a lower resistance spark plug will really help performance at all. Just get some platinums so you wont have to change them as often. People say to stay away from Bosch for some reason. Go for some americans or stock ones.

cease4

Wat do u have on ur stang???????

04mineralgreyGT

If you don't have any major modifications (i.e. forced induction, nitrous, or any serious internal go fast goodies) I would just say go for plugs that are OEM replacements.

handyandy

To tell you the truth, I don't even know. I just picked mine up June/July this summer. Haven't even checked. I would just stick with some Motorcrafts that ford uses for OE. Wait until morning so you can get some other responses though after people wake up.