Distinguish a 915 from other Porsche g/boxes

[Wally]

I did want to halt this 'debate'earlier, but was tempted again. I certainly will not go into a debate over which engine is better with respect to reliability of turbo's, turbo lag etc so I will stop here.
Like I said earlier, everybody has its own preferences, lets help each other with their respective projects and learn from other peoples experiences, rather than discuss what/which is better.
Walter