Will std midsection fit this cat?

[EngineerD]

Will a standard mid-section fit my cat - or will the different bores (I assume they are different anyway) cause issues when bolting them together?

Pic of my cat (unknown brand) connected to my 2.5" bore stainless exhaust.

Standard Midsection

http://cgi.ebay.co.uk/ws/eBayISAPI....498711&ssPageName=STRK:MEWAX:IT#ht_668wt_1139

 

[EngineerD]

Any ideas? Knowing this would be really helpful...