To my limited knowledge they were turquoise for the majority of them (69, 340) regardless if they were exported to Canada. I've owned
several 69 swingers starting in the '70's and they were all turquoise. That said I do believe near the end of model year production some
engines may have been a shade of blue that is sometimes referred to as "corporate blue". That has been discussed and argued here in
depth before with no defined outcome . Never seen a factory orange block in 69. 68 was red. Just my opinion based on old distorted
memory. Good luck with your research and possible purchase.