It looks like all the lens units on the SC1000 fill the rim, so no subframe involved by the looks and so not a 7" unit.
Az, It looks like a very tricky job to get a 7" in that rim and shell, but before you send the unit back why not ask if anyone has a spare Bosch shell and rim going on here? That would almost certainly be cheaper than one of their adapters (which wouldn't work anyway!) I could then send you an adapter that would work with the Bosch.
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