From my 20k miles of experience with this hybrid drivetrain, I don't think the motor'* suffered. No increase in oil consumption, no noise, and checks out to be within its range (oil tested by Blackstone Labs).
Your transaxle, however, is not going to like it. Mine'* been parked since last week cuz it blew. It will blow, just can't say when. It died with a total of 172k miles on it and was original. I've towed and stuff with it too, so it was probably on its way out, but without question the */c had a factor in that.
And if you ask Willwren I've got a tiny bit of KR I need to work on.
And, it'* pretty intensive to swap everything. Not just the */c, but the harmonic balancer, tensioner assembly, relocate alternator and PS pump/resevoir, fuel pump, do your own fuel lines, PCV...its a mess.
'89 Buick Reatta. Formerly propelled by a supercharged LN3, soon to have Series II L67/ 6 speed manual http://<a href="http://www.bonnevill...sc&start=0</a>
'93 LeSabre Limited...$450 fixer upper my friend bought and is having me fix up though currently my driver for the time being