I dropped by a couple of walbro dealers today, and it seems there is no WT-481 model sold anymore.
The guy in the shop said its quite possible to adapt another model easily for my use.

I already gave an order to advante hobby yesterday but was thinking to buy the second carb for my other 160FX locally at a better price.
Is there an alternative to the WT-481 carb that I can use with the same type of adapter flange listed above?