will this work on my spyder

[jaxon23]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33629&item=7954202961&rd=1#item

i will be adding the GST exhaust on after this as well so will it all bolt up?

 

[EclipseGS4651]

I am not 100% sure if this will bolt up to your car but just incase your not aware, this is not a high flow cat, it is just resonator. I bought almost the same thing for my car to later find out that it was a resonator, so if emissions are a concern this might not be the "high flow" cat you are looking for.
-Erik

P.S. I was looking at the auction and it says (Size: 3.5" L w/ 2.5" inlet & 3.5" outlet) If the outlet is 3.5 it is not going even going to come close to bolting up to the gst exhaust.