wanting to buy new cat and headers

['90 325is]

So as the title says i want to buy a new highflow cat and possibly headers for my m20. Anyways does anybody have suggestions for a good highflow cat and suggestions for a good set of headers. Not looking to spend a lot of money since it's a bit tight right now. I definately want to know the fitment of these also. Bolt on is preferable since I want to save money by not having to go to a muffler shop.

As far as headers go I know that ebay ones are hit or miss. Which ones are good and which ones suck and don't fit well?

[Adrian_Visser]

there are only two types of e-bay made in china headers for the m20 that i know of, the HX racing ones which are almost a full long tube and some other ones which are more of a shorty header. name brand headers are $$$$ and although they made be built better and of better materials there is no guarantee they will fit perfectly either. I haven't heard of anyone tryin the shorty ones but several have tried the HX and they might or might not fit worth a shit but will sound better and give gains. check out the ebay m20 headers thread in general discussion or search for free chinese headers there is a thread with a dyno sheet (albeit for a more suped up m20)

[nando]

no such thing as bolt on headers and high flow cat for an E30. You'll have to cut and weld something..

you can start to get something decent in the $500 range for headers, but anything under that and your only option are the chinese headers off ebay.