If you can cross this bulb,base from your 2388 IH it may work.I don't think this lamp,base is a standard lamp(like,for 9003,4.5,6,H1,3,7,11).You don't need to get all 6 hid,that would take alot of power for start up to work.After startup the power goes way down to 35W.You could run all six hid,but i think you would have to get larger wires(power)or more wires for starting all these lights. Two hid will out do four standard lights anyway.
IH part #'s 4 2388(look these up in ih parts to see pic's)
353657A1 HEADLIGHT
137827A1 SOCKET, LAMP
137828A1 BULB
137823A1 BULB
138224A1 LAMP, WORK Drive, RH
183161A1 LAMP, WORK
It may take less time to just buy two Jw hid's from Shoup like someone did on this forum
The Kid