I'm going to upgrade from 98 to 03 dual piston setup. These are the parts I'm told I'm need from the 03, Front steering knuckles, Calipers, Caliper brackets, Brake pads, rotors, Upper and lower ball joints. The hubs I currently have are Timken, which can install in the 03 knuckles. My question is will the 03 ball joints fit my 98 control arms? I'll be heading to the pick n pull at the end of the month for the knuckles and calipers. The calipers will be used as core returns and all the other parts will be new.

 

the 98 and 2003 balljoints are different part numbers, i would say that they are NOT compatible.

https://docs.google.com/spreadsheet/...tZMHc&hl=en_US

this is how far i am into the parts needed for this swap, im not finished going over the details so take this with a grain of salt, and please share any missing information or corrections that you may find

 

I think the control arms are the same, so get the new 2003 ball joints because they are different on the knuckle side only from my understanding. Again you would use the 2003 knuckle and 2003 ball joints as you indicated.