So I want to use the 83 aluminum intake on my 79 engine. Should I drill and tap the aluminum intake for the PEVR? Where should I drill and tap for the knock sensor. I have read about the check valve used instead of the PEVR so should I do this instead? Also, will the newer style knock sensor work with the stock timing box? Reason I ask, I have a new one in box for an 87 GN. I know the connector is different. I would like some input as far as what you would do. I would like to keep the stock 1979 carb, distributor, and timing control box.