so i was reading my six cylinder power manual by leo stantucci and on page 4 there is a pic of a 292 with this cool looking "90 degree oil filter adapter" i have never seen one of these before nor do i know wbat they do and if they are a valuable add on for these straight sixes. apartently they were strictly used on the 292's only but aside from that i know nothing else. any body want to takle this one?