Moparfever is right Bouchillion is a great choice, I ordered a big block truck install kit some months ago. They still advertise in Mopar Muscle Magazine as of the March 2005 issue. Their phone number is 1-843-744-6559. Now according to the Mopar Interchange manual there were two power steering pump offerings one early & one late. The early one #2537354 was used on 1968 Barracuda, Belvedere, Charger, Coronet, Dart, & Valiant in all model variations for all mentioned has a 2.1703 inch outer cover. The late one #2537397 was used on 1968-69 Barracuda, Belvedere, Charger, Coronet, Dart, & Valiant in all model variations for all mentioned has just a 2 inch outer cover. The book does not mention a difference between smallblock or bigblock applications.