possible stock air replacement¿

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?

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