The only difference (which you can tell by looking @ them) is that the KA has a different “bigger” Pulley and a different shaped Bracket so you remove the Pulley then the Bracket from the KA Pump and swap over the Bracket + Pulley from the SR Pump
I just got back from the junk yard. I found a ve30de there from a 3gen maxima I took the front coil packs they are 5mm longer but they will work on the sr20det all you have to do is switch the boot on them and voila. it runs perfectly, untill I find the right one for my red top. GOOD IF YOUR NEED ONE RIGHT AWAY.