H or X CROSSOVER?

I have the opportunity to get brand new 3 inch TTI H pipe and tailpipes. The price difference is significant. I will be saving $750 if I buy the 3 inch stuff.

So my question is......Would there be any downside to running 2 1/2 head pipes into a 3 inch exhaust system? Concerned about any goofy sounds or reduced exhaust velocity that would negatively affect performance.

Would love your opinion @VOETOM