I recently ordered a 5281064 and 5281065 head gaskets.
The 5281064 was the 'mopar parts' replacement for the P4452005 head gasket. The gasket I ordered and received is dated from mid 2009 and has several order labels stuck to it (so its been shuffled around several times). Its also now showing as being discontinued according to the latest order label from when I bought it. So just a heads up if you are running low on your stash.
The 5281065 I also ordered and received was also quite old, over 12 years from todays date per the sticker on it and it came from some dealers inventory so its probably got an uncertain future as well if the place I ordered from couldn't source one from mopar and had to scour the dealers to find one.
The replacement differential pin for the manual transmissions is also now listed as being discontinued. 5134956AA, the two I received were both dated from mid 2005 and the 5134957AA matching retainer tabs are now also listed as being discontinued. The other ones I ordered per the part number in the KC article 4800013AB were totally not right and I am unsure what they are supposed to fit. Transtar makes a pair of tabs p/n 92717AK that are taller but can be cut down if necessary.