Parking brake cables

I have a 69 Barracuda fastback that is a painted shell. Was going to order new parking brake cables for it but saw you can order a complete set with or without an intermediate cable. How do I know which set to order? Didn't know they came two different ways. Where is the intermediate cable anyway? Thanks for any help.

Hello 67dodgedartconv
You can try Inline Tube @ (800) 385-9452
They are friendly and helpful on the phone.
See this link
Product List – Inline Tube
Hope this helps.
Happy Mopar :)
Arron