This is the sandwich plate we sell the most of, it has the following threaded insert options (drop down box) to match your application - there is a price variation against the options other than 3/4" UNF. The oil ports are female 1/2" BSP, please view our extensive range of adaptors and sealing washers for the correct parts for your application.
Any questions or should you want to confirm any detail, please call our knowledagble team to discuss.