I have a 1968 Malibu Convertible with a 1969 engine and obviously ordered with a SS396 package- because of the factory trim hole and emblem hole positions. The numbers on my 68 vin tag and engine stamp numbers match. However I cannot find the JQ prefix in your engine code listing for 69. By the code it looks like this person ordered the car late in the year code is T1210JQ. Any one have any answers?