Thinking of exhaust mod

Thanks for everyones feedback.

I stopped by my local midas today to get an approximate estimate. First I asked about welding in an h-pipe. He seemed confused why I would do such a thing. Saying there would be no advantage in flow or increase in horsepower. But if I really wanted it done he would have to look at the car to give an estimate. Said he would have to fabricate something. I thought it would be a simple job, just weld in a 2 1/2 diameter pipe connecting the two near the back of the car. Sounds like I should check someplace else to get a second opinion. I wouldn't think it would cost too much money and take too much time. But I could be wrong. Im sure doing an x-pipe would be much more expensive.

I do understand the x-pipe design flows better. Am I correct in this: X flows better than H. H flows better than nothing?