you'll want 1/4" & 5/16", i'd get both with 90 degree fittings.
old thread when i did 'em (you can see a bit much of a bend in the fuel line for the straight fitting...);
i'd order these;
https://www.beemerboneyard.com/cpcqkdisconktm.html
https://www.beemerboneyard.com/cpcqkdiscongs2.html