what should I do with this exhaust?? (3")

[silverturbogti]

OK, first of all I already have a 2.5" APR downpipe with a 2.25" supersprint catback.  There are some things I don't supersrint exhaust (2.25" to begin with).  So today I bought a 3" turboback with a magnaflow muffler, its stainless other than the cat and its mandrel bent.  It was $150.  :driving:

(pics for view)





Its dirty in the pics, but its acually in really good shape!!  

My issue is what should I do?  Run the 3" turboback.  The cat is dead so I will most likely do a testpipe.  Or should I keep the 2.5" downpipe and mate it to the 3" catback.  (I understand there will be no substantial gains over a full 2.5" system).   I just know that with the APR downpipe I an ensured quality and fitment because it is on my car already and has no issues.  
Thanks for the opinions in advance  

[screwball]

if it were me i'd just run the whole 3".

[silverturbogti]

I'm gonna punch the cat out because its f'd.  It has a bad rattle.  then run the 3" system and if it rattles and i don't like it I will run 2.5 to the 3 inch catback.

[silverturbogti]

I did the 3" exhaust.  The cat was shot!! The honeycomb just fell out.  I made some good power up top over my 2.5" (apr dp) to 2.25"(supersprint).  Boost comes on much different.  It feels a little boggier down low but when it hits boost it hits harder and feels faster.  I would suggest a 3" exhaust.