Let me tell ya. I'm still trying to figure out everything with my KA swap. Everything kinda stops up here when winter hits . I still don't know what I'm going to do with the tranny, don't want to use the stock KA auto trans. trying to see if I can mount the old L28 5speed (working with what I have), and whether to leave the R180 diff in there or swap it with the R200 I have in the parts car. Engine location and so on.
I don't recall anyone doing a KA swap besides me and I haven't made any real progress. Wish there was someone that I can use as a refference with for this stuff.
I agree with ProjectSR20. the KA block is pretty strong, its just that the engine wasn't engineered with FI in mind. Its considered to be stronger than the SR block (KA-T.org, source), its just the SR20DET has less compression, thus can handle more air volume.