[Aussie Mike]

I'm running live side pipes and Leeroy is running a full under body system. Both systems have their pros and cons.

The side pipes are traditional for 427SC cars and are part of the character of the Cobra.

Side pipes are good for ground clearance and you can build a very free flowing system. They can be loud and obnoxious which may be a good thing or a bad thing depending on what you like.

They sound great but it can get a bit wearying on long trips.

They are also not technically legal as the exhaust is not allowed to exit towards the foot path. This is an issue at rego time but you probably won't get booked for it later on.

They can also give you an nasty burn on your leg or you passengers leg if you forget they are there when getting out of the car.

The under body system is good for controling the noise and avoiding those leg burns. Leeroys side pipes are cosmetic so don't get hot but maintain that cool Cobra look.

Ground clearance can be a problem as can heat radiated into the foot boxes and under side of the car (especially with cats). Space limitations may limit your options for building a free flowing exhaust and it may make working on the car a bit more difficult..

So both systems have their advantages and disadvantages. You just have to decide which one is right for you.

Cheers