Depends on what power your running. 2.5" should be good enough. And I'm pretty sure they fit as the mk2 chassis is the same as mk3

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I had the ko4 do from them for my ko4 conversion. Was ok and still is as far as I'm aware.
 
I had the ko4 do from them for my ko4 conversion. Was ok and still is as far as I'm aware.

How expensive is the k04 conversion also is it a pain in the arse to do im about to take my car off the road for a bigger turbo upgrade and not sure what to do oh and do you no if you can run vxr injectors on a k04 thnks
 
I bought one yesterday for my ko4 conversion. From what iv heard there quite good. I haven't got to drive mine yet so realy couldn't say if its worth it but is abit of a pain, depends if u can find the parts cheap off an lcr.