Does any one know if you can fit 2 of these on the mid pipe? I will be getting a cust. mid pipe soon and want to try these out, it says its 20 in. long and 6 in. wide. I want to get the biggest res. i can to get a better sound.

Heres the site:

http://www.aeroexhaust.com/import_exhaust_2540i.html

Let me know what you think, Thanks.

btw I have MMW header, Magnaflow axle back, and Injen sri intake

The link you posted is for a muffler not a resonator.
"The Aero Turbine Series 2540i is a 2 1/2" i.d. inlet, 4" i.d. outlet with an angle-cut rolled tip. The 2540i was designed for any standard gas vehicle with an end muffler." Quoted from page. Maybe try looking thru these.
http://store.summitracing.com/egnsearch.asp?N=700+4294804382+4294891681+115+4294763923

i have the AERO AR25 resonator in my back seat waiting to be installed (not that that helps the situation) but its a 2 1/2 in and 2 1/2 out resonator.........i heard a lot of good things about it so lets see what happens when i get my exhaust done