53 customline speedometer cable help!!!

I have a 53 customline with a 390 and a c6 trans. I want to hook up the original gauge cluster and was wondering what type of speedometer cable do I need? Can I use a push in type and on the other end a 5/8 I think.? Basically what type of cable do I need for this to work? Thanks guys....

 

Top nut is 5/8-18 bottom nut is 7/8-18. If you can not find a cable locally just give me a length and we can make one up for you.

 

Cool thank you so much I'm gonna have to take a look to see if its a push in or a screw at the trans. I will def let you know thanks again

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Mid to late 60s galaxie should work,I have one from a 65 in my 55 with a C-4 trans and it screwed to the original speedo.

 

Sorry my bad the C-6 is the push in with the clip on gear, I didn't read your question close enough.