Topband: Shunt Fed Tower-Need Parts

[Edward Sylvester]

I have a 70' crank up, loaded with a Steppir and some other antennas.  I recently installed a sprinkler system and took the liberty of installing radials everywhere.
 
Now I am ready for the next step.  Does anybody make a shunt feed kit, which I can simply install or do I have to do this from scratch?
 
Does anybody have one for sale?  Want this for 160m.
 
73,
Ed NI6S