I'm trying to save out an assembly to give to a customer, but I don't want any details saved out, such as the part names, or so that anyone can figure out the manufacture of the product. 

I was told by our support to save as a STEP 203 file, but when I've opened this in 3DS Max it's showing the full feature manager tree and it's clear how the model has been made up. 

Does anyone have any ideas to get around this?