Well, we're stretching the 20-years-of-manufacture rule now, because the Nissan L was made for only 19 years. However, it gets WEOTD status because it was used in so many cars, it was available in both four- and six-cylinder versions, and because VintageRacer sent in a photo of his 245-horse L18 (which revs to 9200 and gets an enthusiastic application of the Jalopnik Stamp-O-Approval). Nissan put the L in the 510, 610, 710, 810, 200SX, 240-280Z, trucks... pretty much everything but the forklifts in their assembly plants (and maybe those as well). [Wikipedia]