IH Parts/Fiche --Comments Please

[alice@domain.elided]

Hello,
I spoke again with the ex-IH dealership. Seems they have boxed and 
stowed away all their IH parts (damn, just three days ago!), so 
looking through it is impossible.  I am trying to get a manifest 
copy, since there are parts for all IH trucks and probably 
very little for Scout.  I will then need to know part numbers of 
desirable Scout bits and hope the quantities will convince them that 
a search is financially lucrative for them.  In the interim, I have 
been thinking of exactly what parts I would be willing to buy as 
spares and shelve for who-knows-when.  Sometime I get carried away 
over spares, only to never need the part I keep tripping over!  Of 
course, I could immediately use a 196/392 rear seal (I think the same 
for 304/345 as well -but I know there are none of these in their 
pile).  I could use a few gasket sets, but it seems last time I asked 
(when they were Navistar) they had none.  R&P sets?  OIL PUMP?
Yeah, I would stash away one or two of those.  I asked about prices, 
since I care not to buy the whole lot, nor do I care to pay top 
dollar.  No answer yet.  

This is where I ask you guys: Is IH/Navistar genuine stuff so rare 
and of highest quality that I should pay regular (high) price.  I 
mean, is a NAPA gasket set just as good, perhps moreso, given the 
accrued shelf time of the IH part(s).  As for the fiche, they want to 
keep that as long as they have the parts.  I could probably buy it if 
the lot of parts went to another dealer who has his own fiche.  At 
any case, it may be that only a very small percentage of the fiche is 
Scout related, all of it difficult to read, impossible to copy 
legibly, readily available somewhere-I-do-not-yet-know and requiring 
me to beg-borrow-buy a reader!   

Any thoughts, comments, tips, beer greatly appreciated!
Mark