Highwingloader - do I know you? You posted this question the day after a friend of mine asked me exactly the same thing. My friend uses a different PPRuNe alias, so unless you've got two aliases, it must just be coincidence!
I asked around on behalf of my friend, and got an e-mail from one of the guys who built my Europa. On the assumption that you're not the same person who asked me about Subarus over the weekend (in which case, check your e-mail!), here's the reply I got:
FFF,
You're correct about the negative aspects of the Subaru. Tell your friend not to touch it and to stick with Rotax 912 engines., preferably 912S or 912 with a wobbly prop.
The Subaru had a number of mechanical problems as well as being heavy. I know of no one installing them in Europas now!
Regards
Hope that helps!
FFF
-----------