There's tow tanks in 69 this is the one I prefar (To Jun.-'69)
www.carpartsmanual.com/datsun510/Datsun510Index/.../FuelTank/WagonExcEvapoToJun69/.../Default.aspx
This is tank #2 www.carpartsmanual.com/datsun510/Datsun510Index/.../FuelTank/WagonEvapoFromJul69/.../Default.aspx
please :cool: send pictures & cost :cool: