personally i wouldn't get too nutted up about the availability of parts 10 years down the road.
anyone here want to bet on whether Ford, GM or Chrysler will be around in a year? 5? 10?
its also fair to note the guys that are doing the redstone thing will have a distribution network setup
with engines and parts on all continents before they are done.
the engines themselves are so much better in design and build quality than that of the typical listeroid
that the likelihood of anyone needing any substantial hard parts is likely near nill.
most folks don't run 24/7, and if you are one of the few that do you probably will lay in a selection of repair parts
when you order your engine anyway. if you are running 24/7 you know you can't live without your engine even for a few days
waiting for parts even if they were on the shelf ready to ship from across the state.
anyone else that likely will be running intermittently, or during storms and the like
the engine will likely outlast most of us as is, and i wouldn't expect much of a need for parts apart from
maybe what comes in the spares kit anyway.
i suppose anyone that doesn't follow that logic should maybe look into buying some other engine?
maybe a kubota, yanmar or perkins? even those might be tricky gettin parts for?
and who knows how many of those manufactures will be around in 10 years?
the way things are going now, i wouldn't bet on all of these manufactures being around.
for that matter does anyone of us have a guarantee we will wake up tomorrow?

bob g