Muffler specs on a 2004 V8

[redbull9944]

I've been searching around and can't find what I'm looking for. I'm about to buy a Borla XR-1 off of Summit Racing. I need to know the inlet, outlet, and length of the muffler to buy. I am under the impression that it is 2.5 in/2.5 out and somewhere from 18-22 inches long. Anyone know what the exact specs are?

 

[Nero]

2.5 center in, 2.5 offset out. The muffler not counting piping is right around 24 inches.

 

[redbull9944]

2.5 center in, 2.5 offset out. The muffler not counting piping is right around 24 inches.

http://www.summitracing.com/parts/bor-40942/overview/

So will this work? I can only find them in center out, will I need a pipe to be bent in order to fit? This one is 22 inches long.