You didnt miss it I havent tried a 90º adapter yet as post #16 (70 Duster Crate) has suggested as I cant find one locally I have tried some relocation kits but the part that screws to the block is just to thick and sits against the header. Even with a thinner piece that screws into there it always rubs against the header so maybe this 90º adapter will work? I just dont wish to waste money for something else not to work ya know?