66 Dart GT HT Whatsitgonnabe?

You mean stove pipes like these? http://www.forabodiesonly.com/mopar/showpost.php?p=1970546802&postcount=4

Nope. My covers are simple holes. Like these.

The breathers won't be what breaks my budget so never mind them. My priority right now is actually the pulley.

Sorry, I can't help you on the breathers for your valve covers nor the pulley. I'm sure someone will have the pulley you need.