Got Magnaflow Muffler, Now need exhaust tip size help

Hey guys,

I picked up a 2.5/2.5 muffler (magnaflow) and now need to get an exhaust tip. I was wondering how long of an exhaust tip do I need to get? I know it would be a 2.5 inlet, but what size outlet to go with (3.5 or 4") and then how long would I need? I see 12" ones are the shortest ones outside of getting a 4 or 5" tip, but they tend to be 2.5/4" is the smallest I could find.

I like the look of the one that comes on the magnaflow catbacks but I can't tell how long it is from the pictures. I just know from them 12" is the shortest I can get to go 2.5/3.5.

Any help or pictures would be great!