i used to have an LS430UL and had the dataSystems controller on it. now i have a Crown Majesta with the same stock air type susp with the dataSystems controller on it. i just came across this product for sale (slightly used) front only for $250. i am very curious if this is like a stock replacement since the connector valve seems to be identicle to stock. anyone ever seen anything like this before? i wonder what the pros and cons of this replacement would be?