nissan Pao exhaust

Desperately looking for abn exhaust to fit my beloved Pao - I have a K10 exhaust system which has a standard fitting to the engine - however the {Pao has a unique fitting which I can't seem to trace. I would be so grateful for some help thankyou :)
Hi there - thanks for the message - I will try and get a photo to you - if any problems - it is a 1989 Nissan pao import. Many thanks again :)