HICAS is a 4 wheel steer system that can be removed.
the good thing is that the HICAS models came stock with a V-LSD (1way) but wen you remove the rear rack n pinion it will leave you with a strong PS pump that will make ur car turn like a cady.
HICAS eliminator kits are aveliable on the market and they are pretty eficient. I think if the car looks good go for it and make sure the LSD hasn't been swaped out... look for the orange sticker from the driver rear on the diff, it will say V-LSD.
good luck!