How about this exhaust set up?

[KCz Eclipse]

Alright, i have a previous post on here asking what exhaust to buy for my 91 gsx. About half of the responses said to just buy the 3" srs off of ebay. So i have decided thats what i am going to do (I can always change the muffler). But the catback system is the easy part to buy. Here is what i have found

Dowpipe- PUNISHMENT RACING 3" DOWNPIPE FOR ECLIPSE/TALON - Punishment Racing

Cat- https://secure.buschurracing.com/catalog/product_info.php?cPath=22_36_163&products_id=204

Catback- Ebay SRS

But i have a couple questions. The buschur catalytic converter says that it is a slip fit. It looks like the srs system and the downpipe are both set up for a bolt on cat. Is this going to be a problem, or should i find another cat. If i need to find another cat, what do you guys recommend. Let me know what you guys think.

Thanks

Oh, i forgot to ask, is going from the stock 2.25" downpipe to a 3" going to be a problem as well. Will i need to buy some sort of an adapter or something.

Come on. I need some input. Please & TY

 

[KCz Eclipse]

It's not just the catback. Its manifold back. But I know that that is still high. But it doesn't look like the exhaust is going on anytime soon. When the guys removed the manifold today, there was oil coming out of two of the holes in the head. I know its no the right terminology, but thats what was wrong. The valves were all white, which he said it meant I was running really lean. Not sure if thts true, but anyway, the exhaust is the least of my worries. We are thinking about either swapping out an already built engine, or rebuilding what I have.

 

[NHerron]

You might want to post some pics of that, we should be able to give advice based on what we can see