My 340 1970 challenger has a 90 degree oil pump adaptor on it to clear the headers. Can't seem to find anyone who sells a oil filter pump gasket does it use one ?
Detroit Muscle Technology sells the 90 degree oil filter adapter gasket set. The copper washer goes between the head of the big bolt and the adapter, the other small neoprene gasket goes onto the bolt after you insert it thru the adapter, and the big ring gasket seals the outer edge to the block.