Not to be a buzzkill, but I have never seen the pineal/DMT thing backed up. i think it's a biochemical "herbin' legend".
I found an abstract suggesting DMT present (quantity not stated) in rat pineal extract, but from an interested source. Until it's reproduced by less-invested researchers (remember cold fusion, anyone?) I'm not climbing aboard. Even then, it needs to be established if there is enough DMT, often enough (or if there is another psychedelic hormone that awaits discovery) to account for the rather grandiose claims of the DMT/consciousness hypothesis ...