Making copies (or scanning) your receipts is a great idea. In some cases
however it may not be necessary. I know that AutoZone for one keeps that
information on file in their computer system. That is one good thing I can
say - if you buy something there that has a warranty you should be able to
get that warrantee honored at any Autozone, receipt or no receipt.

That however doesn't mean the rebuilds are any good or they will have what
you need in stock.

I have an Autozone rebuilt starter in my bus. It may not be the best thing
but it was one of those situations where I needed it and they could have it
there for me the next day - which was a Sunday.

Good in a pinch - but if you have the time and accessability I would say new
(or reliably rebuilt) from a quality source is best for sure.

I'd buy a solid alternator and keep it as a spare - then run that Autozone
on until it gives out.

Good luck.

--
Thanks,

Jeff
'90 Carat (Grover)
'86 (We call this one Parts)
'78 Bus (Melissa) Patty's Bus