Originally Posted by edi-traveller
Make sure you are in the first two cabin sections on both 757 and 767 (whether in J or Y) as these have the convertible leather seats with 34in. The seast in the third section are old cloth with 31in
Having now flown this route in both J and Y, I can confirm that
edi-traveller's advice is good; the first two cabins have the same (J) seat pitch, allowing you some extra legroom on your economy ticket.