I've contacted the Australian agent and apparently the exhaust is no longer available from Evektor. It has to be made to order but that will surely be months away. I can do that but I'm only replacing one pipe so it could be a short term fix.
I like the look of the Toucan exhaust because it stays away from the cooling system but I don't think it supplies hot air for the carby heat so then my next preference is for the SS system from Aeroweld. I'm sure it's going to clash with the radiator and or hose but my options are limited without spending over $4000.
I might get away with the Aeroweld system and some careful cooling system plumbing and maybe move the radiator slightly right. Hopefully it won't clash with the oil cooler.