I own a 93 Super HICAS and I find that its easyer to get the car sideways in a drift, but much harder to keep the car sideways. I mean i'm not the best drifter out there an di am still learning, but thats what I see. As for a HICAS lock I found this one and i am planing on using it. If you have used it before, please let me know your thoughts on it.
TOMEI Hicas Lock II Nissan Mechanical & Electrical