The older SD has a blue interior. Not sure about the red 380...I think its some shade of brown, but don't rightly recall. Switches? If you mean window switches - they go fassst. Other switches are hit-or-miss.
The top of the 617 in the SD is gone...the aux. water pump may still be there...if not, maybe its in the 380 still...there is also a 123 there (it may have one too, not sure).
There is also a 115 300D there....motor still intact.
Oh...it costs a buck to get in...so bring an extra dollar.