I have 4 mufflers for sale,
First two:
Redback side exit - 1 3/4" ID - dirty but in perfectly useable condition- $30
Unknown brand centre exit - appears to be 1 7/8" ID - small ding in the bottom but easily useable - $20

Hotdog muffler with new chrome tip Side exit - almost brand new, only used for about a month - great condition - 1 7/8" ID - $50

MANIFLOW side exit - 1 7/8" ID - great condition (just a bit dirty, will clean up nice) - $70

Pickup preferred from Wollongong NSW - Can post at your cost if you're interested