does ne one know the dimensions of our exaust system specifically the muffler, Inlet outlet diameter lenght ETC

What are you trying to do?

I'm guessing but the inlet is about 2", no outlet since the tip is connected directly to the muffler.

If you're looking at buying after market muffler and need aprox measurements of the stock. well the stock muffler is Freakin HUGE. very long... maybe 24" long which is my guess.

You can fit almost any muffler in our cars.