Manual valve body.. do you need a kickdown linkage?

I'm pretty sure the trans I have has a stock valve body in it. I'm thinking about using a Lokar kickdown cable too, been researching that a little. Might work better for me as once I get my car on the road, as I have 3 engine/trans combos I want to get some running time on.
The bouchillon cable is better, it is based on factory parts from magnum engines and is more durable. That being said, you can build your own quite cheaply using the magnum cable and brackets from a wrecking yard.