Why 8 ohm? Stockers are 4 ohm. If you have the mach system I suggest you get a set of comps and replace the 6x8s with a 6.5" round and replace the tweet in the pod with the aftermarket tweet. Replacing the stock 6x8s with an aftermarket 6x8 coax isn't gonna gain you much. A 8 ohm driver will return even less. Give us a better idea of what you are trying to accomplish.
i was told that the stock speakers in the mach system are 8ohms and i dont want to rewire everything right now so i just wanted to replace them. i found some stock speakers on ebay that i am just going to replace them with.
when i upgrade i will not be using 6x8's lol and will rewire the whole car. thanks for the help guys.
For the record, they're 4 ohm. I've had a '99 cobra and a '03 cobra both with the mach system. '08 also 4ohm, except for the 8' woofers in the front doors 1.5 ohm dvc. weird.