Fan and Power Steering belts

I just replaced the belts on my '74 318. They are goodyear gatorbacks:

-15440
-15461

Im just not sure how different a '67 273 would be from my engine. Before I installed these belts I used Dayco Top Cogs:

-15430
-15460

Either way it's probably close to these numbers. Hope this helps.

Those fit as well.