For sale is a brand new Chevy Performance Parts (AcDelco) 92-94 non vented Opti. It is brand new in the box and I have not opened it. I purchased it from Summit Racing last year, but have decided to put a 24x conversion on the car so I have no need for this. I purchased as a spare in case I had problems with mine in the future and I didn’t want some cheap aftermarket unit. Here is a link to it on Summit and it is discontinued: Opti. This is a new factory replacement unit and not remanufactured. $300 shipped OBO to the lower 48.