No, not really. I have one speed vs altitude chart for the A5 thats been posted here on this board in the past, but its hard to read and poor resolution.
I guess I was supporting Funked's statement that if the A8 did not commonly contain MW50, I would think it would be exceedingly rare, if not impossible, to find them installed on A4's. The only information on MW50 equipped A4's I've seen was the information posted by Naudet earlier in this thread.
Wilbus, did you ever get that A5 manual that you ordered from that online site that sells all the original german aircraft handbooks?