You're welcome. I'm just passing the favor along. A member of the YTmag board just recently sent me a free part for my NAA, so now I'm trying to help out someone else.
For reference, that carquest number is 88397 you can get that crossed for napa as well. Both the napa and car quest filter are about 30% less expensive than the NH filter, and look identical to it. You can also get a napa number for that oil filter too. If I have it at home I'll email you the number.. but I have a feeling all that was written in my manual that is now gone with the tractor.
The hyd filter I was only able to find at the NH dealer.. but that is like a 300 hour change item.. so not too bad. Oil filter wasn't bad from NH either.. just that durn air filter.. from NH it is a tad spendy. Clean out the air filter canister very well. get all the dust out. I usually took a wrag with a few drops of oil on it to completely get all the dust out.. and then I made sure the seal on the canister was nice and clean. A smear of vasolene on the seal, then wiped off makes a good seal.
Lots of zerks on that machine.. especially the pedal linkages.. and the front axle kingpin zerk may take a whole tube of grease if the previous owner didn't grease it much.
Soundguy