Hello all!

Being new to the JEEP world, I am coming across some wierd findings while replacing the lifters in my 4.0L.
Jeep is a 1999 cherokee sport, the head is the older casting from 1998,( a good thing i'm told), the Valves are from a 2000 part number( lost a keeper and Chrysler told me mine was from a 2000 and newer), and the fuel injection connectors are from a 2001(the ones listed for 1999 are not even close to the ones I have).

I know this by the dealer confirming my findings, they do not match what the Jeep was built with for 1999, and it is from the factory one owner before me ?

Anyone else run into similar?