Thanks all for your insight's and information.

Regarding the don't "fix what ain't broke" I am "down with that", however my
intent (and I could have been clearer on the initial posting) is to get a
rebuilt engine and then mount all new components.  So as you can see
everything will be moved and jostled, and with the engine out replacing a
lot of these things, I hope, should be easier.

To give something back, I'll post what I found out when I'm donw (which
should be in about 6 mos)

bem-stem

> I agree, but I think replacing parts like the ECU and alternator is
> unnecessary unless they're showing signs of problems.  My feeling is that
> replacing parts like that preventatively is as likely to cause problems as
> it is to prevent them.  Wiring harnesses get disturbed, bolts get
> loosened, hoses get pushed out of the way...and every so often that causes
> an unexpected failure a few miles down the road.  The ECU that's in there
> has been working fine for years, why disturb it now?  It has no moving
> parts and it doesn't wear out unless something breaks from vibration or is
> damaged by a wiring problem.  Alternators sometimes fail but have been
> known to last the life of a car, too -- and an OEM alternator is much
> better than a rebuild you got from the parts store.