I just had the exhaust done on the 110 with a 2.5 na diesel. I decided to save some $$ and go to a local hot rodder and have him bend and weld for me. Total job cost me less than half of what the parts alone would have cost for the stock exhaust.

I went with 2.5 tubing from the downpipe back. Wow what a difference. I've got a noticeable improvement on the top end now. It still accelerates pretty slow but has a bit more top end for keeping up with traffic.