Completely original vs. upgraded

[Gavin Thomas Nicol]

I have a small NeXT collection (getting bigger ;-)) and one thing I was 
wondering about was the need to maintain originality. For example, I 
have one NeXT cube with an interesting pedigree (it has NeXT asset tags 
on it, and some interesting bits), but it's a 68030 motherboard... the 
low end cube. I have a NeXT Turbo board I can put into the case, but 
then the unit wouldn't be "original" any more... does that matter?