Muffler manufacture in NZ?

[soundbeltfarm]

Got a mate that wants some megaphone mufflers for his old trumpy.
do you know anyone that builds these in nz?
cheers

[Taz]

Custom Chambers.

Cycleworks

[nadroj]

Meads brothers in Hawera

[dogsnbikes]

here's another option http://www.harrispipes.co.nz/