Differing size pipes make much difference?

Hi all,

Hoping to get feedback on this...I have Doug's headers (which I believe dumps to a 3 inch collector). The exhaust tips that I purchased from Accurate Exhaust are for 2-1/4" pipes. I believe the mufflers I have are either 2-1/4" or 2-1/2" openings.

Since I am getting the exhaust custom fabbed, would it make a difference if I go with a larger 3in pipe from the collectors to the mufflers to ultimately a 2-1/4" tailpipe (to fit the tips)? Or would I not see that much performance difference and just go with 2-1/4" all the way back?

Thanks for the help!