I have a freind who is after a left and right hand side 40 IDF Webers for his 1.7 motor for his 33 powered Sud, if you have such please phone Colin on 0407 090 826, or email me drtool@bigpond.com.au, thanks.
They are the same but you just have to change the spindles around. a fiddly job but 40's are not super common so you may have to do it.
I did the changeover on my brothers 1700 sud, and while it is doable, my mate up the road wants a simple bolt in, so he can take off his 36's and put on 40's, Colin.
Have you found any yet? I think i know someone who may have a pair but not located locally (international).