[DREAM2]

I was talking to a mechanic friend of mine over the weekend about some mods I want to do to the car. First off, we will be installing the 1.5/2.0 Goldline springs. When we are doing the car, we will look at the exhaust.
After I explained a few possiblities, we decided on doing a exhaust similar in look to what the old AAR Cuda's had - and exhaust with a cone shaped tip that comes out before the rear wheels.
We were thinking of a free-flow muffler with one input and two outputs mounted a little after the catalytic conveter with the outputs going to each side of the car.
This would be a nice exhaust with only one bend, so it flow better than one that goes out the back of the car. It would also eliminate any over axle clangs anyone hears from a lowered car with aftermarket exhaust.
We would leave room between the converter and muffler for the addition of a resonator if one is needed.
I do have a few questions:
What mufflers would fit in this location ( in the middle of the car, about right under the front seats or so)?
This exhast I know will be louder than a full exhuast, so what muffler would anyone recomend? He mentioned Flowmaster, but I've read bad things about these.
I don't want to have it extremely loud in the car, so would there be a better place for the muffler given the aprox. location that it has to be in?
Has anyone done this to their PT?
I was thinking of sticking with the original 2 1/4 size in stainless, of course. Will there be clearance problems (with the ground)?
He said we can experiment with different mufflers for sound, but I'd like to get it right the first time. Any ideas on this subject would be appreciated. Oh yeah, it's an '03 Turbo car. Thanks.