I have not had any feedback from anyone on what e-brake cables they are using.
I have purchased a set of these cables, but the ones specified for the '67-'72 and sent them to a customer in the UK. I have not heard back on their fitment.
http://www.ebay.com/itm/380213787534...%3AMEBIDX%3AIT
I can get you the length of those tomorrow, if that would help.