These are the cross for Euclid brand that I got local ...
These are the tie-rod ends and one of the drag link ends, takes 7 total, 4 Left hand and 3 right hand thread.
The end at the steering box Pittman arm is a little larger, RH threads part # E4617R
Spartan seems to only want to replace the rod assembly. I removed a end and was able to source it.
These were what fit my chassis,
But probably be best to remove one and take it to heavy truck parts store and match it up.
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified