the p30/454 was the most widely used moho platform in the 70s and 80s.
while gm shops can get parts 100s of aftermarket shops will have parts.
yes napa or ANY of the chains can get parts, the issue is part #s, and
getting exact FIT will require YOU to do the homework.
the stuff is ALL available, but only an enthusiast for the p30 or classic mohos will know about the right stuff.
y need to be dedicated to the effort and get self taught n up 2 speed on it...
given your location place a call to THIS shop (vinnie are u paying attention)...
ipdusa the volvo turner shop and parts store!!!
yes it's a volvo shop but in the 80s they were the #1 place to go for rv mods on the 454/p30 and especially 'streams.
i had a 79 a/s moho for 25 years and had it totally tweaked out with an 'ipd' suspension package...
it was very very cool.
someone there (if u call) can point u toward local shops that still handle the old mohos.
THIS site hasn't been updated in awhile, so i'm not sure IF they are still in business...
RV advice and store...
they have an extensive archive of classic moho information/parts and upgrade advice...LOT of details on parts.
browse it awhile.
MOST of the original moho guys on this forum aren't here anymore.
they started another forum/community JUST for the classic mohos.
u might wanna ask your question there for better help.
or search the OLDER moho archives here for info, there is a LOT of good stuff in the older threads,
and only a few regulars NOW on the mohos issues here, most have migrated to the other site.
schematics for the p30 are available online, that will help u a LOT with part # and details.
a/s made a lot of modifications to accommodate the rv use.
IF u could find/get an older a/s service manual that would help u a lot,
even a gm shop/service manual specific for the p30 would be useful and they are available if u look around.
best of luck