Thanks for all the input. In response to Brett's question - I am not looking for total concourse correct. I want it to look "correct" to the average person, but give me a little more in the performance area without sacrificing the fit of the pipes through the cross brace under the car. I like Vikki's system and may go that route if there is no way to put a 2.5" system in without shimming the cross brace as Pypes recommends. I may have to print out Vikki's pictures as a reference.
I think I will drive it to a local exhaust shop before I swap the engine and have them take some measurements and see if they can run a 2.5" system or I will have to settle for a 2.25" system.
Again, thanks for the input. I will let you know how it turns out.