Exhaust pipes

ok, so i just got headers for my stang... they're 1 5/8 primary long-tubes with 3 inch collectors. i was wondering as to my best route for a crossover pipe. should i get a 3" x-pipe, or get a 2.5" one and have collector reducers welded to it? is there any real benifit or otherwise to having 3" over 2.5" pipes?

the cool thign about having a 2.5 inch xpipe would be that i could use the Dynomax super turbos that bolt right up.


anyway it's either 2.5 with tailpipes or 3 with turndowns. lemme know what you guys think.

ok so i've done a little research, and here's what i've come up with: summit universal 3 inch x-pipe kit, dynomax round super turbos w/ 3 in. in and out, and flowmaster turndowns. i'll probably have it installed at a local muffler shop since i dont' own a welder.