adamadam4, I did just that. I took a tape measure on board and measured.

On the domestic 767-200s (is that all of them now?), the seat pitch for at least some of the rows in the front Y cabin is 31". Everywhere else it is 32".

On the 2-class A320s, the seat pitch for Y seats infront of the emergency exits is also 31". Behind the emergency exit it is 32". The ex-Tango planes are 32" throughout.

I think the seat pitch is a uniform 32" on the A319s. I havn't measured them because I haven't noticed a difference. I'm 6'5"; for me, the extra inch lets me sit without splaying my legs to the side.

You are safe with the 767-300s -- they have 32" throughout.