Sorry but the use of the term "Wheatbelt " was put to a line of Stimmies with impressive colour and pattern found only in the Wheat growing belt of Western Australia and is well recognised for that fact, For others to now claim this term for critters that are not found within this particular area is merely a marketing ploy.
I am not taking away the attractiveness of the SA stimmi, It is quite a nice example but it will always be to a purist a SA not a Wheat.
Just my opinion! (having bred 100's of the genuine line over the years)