The Big Block Mopar trays will accomodate a stock 3.750" stroke or anything up to a stroke of 4.500". For pans with mid or rear mountedpickups, there is the #32006 tray with openings to allow the pickup. All these trays sandwich between two pan gaskets in order to mount. The 32005 and 32006 trays are redisigned for better windage scavenging, and increased sump protection for big inch engines.
When installing, the pickup should be installed to almost tight first. Then, rotate the pickup away from the block. If pickup uses a bolt up bracket, install it now and torque the main bolt. Install the tray over the pickup, then rotate the pickup the final 1/2 turn to it's final position.