RSR ghetto welded, or 3'' O2 elim

[Scoped_GST]

well, it comes down to this. i recently bought an RSR system that had a 2.5'' HFC ghetto welded onto it. i put it on, it feels great and sounds quite but nice. I'm shooting for somewhere in the range of a RS49T, so i just wanted to know opinions if i should ditch the 2.5 -2.75 HFC and catback and get a 3'' O2 eliminator (which is what i would want otherwise), or if i should just keep this and get a 2.5 downpipe and that will work fine. I have no problem gutting the cat, even tho i live in cali, . thanks for any suggestions... ...and yea i know this question is clich, just wanted suggestions for my situation...

 

[KRAZYKOREAN]

If the rsr is like the apexi 2.5 then goes to 3 then into a 3 inch catback then that would be fine, if its the 2.5 all the way and then 2.75 then I would change it. That what I would do, actually thats what I did.