1969 1 ton rear end question

[wzschirnt]

I got into a 'discussion' about 1 ton dually options -

Was the 'inside the bed'/ 'outside the bed' dually setup an option for 1969? I seem to remember that was a one-year only option.

Anybody have documentation about this? More than the 'I saw one last month' type of thing.

Thanks.

walt z.