Parking brake cable length with wide Amc-20

Hello all.

My CJ-6 is almost stock (its a 1979 export model with 258 engine, T-150 and Dana-20 ... ).
It had the narrow amc-20 and i installed a wide amc-20.
I noticed that the left rear parking brake cable is very tight now. Im a little woried that its too short to get the wider amc-20 and that it may limit the movement (opening) of that side of the axle.
If someone here made this swap: Do i have to get a longer rear left (and right) cable?

Ziv