Les Don't the know the answer to your question. I do know, however, that the maintenance free batteries from NAPA, EXCIDE, INTERSTATE and OPTIMA all fit in the space very nicely and have both top and side posts on them. The side posts allow for connection with the existing battery wires without any tugging or tweaking. If you are insistent upon DELCO, ask the dealer. If he/she doesn't know, go with one of the above. Dick Ryan VIN 16867