[SECC] Matching T Vertical for 160 meters

[ku8e at bellsouth.net]

   I recently switched my center fed zepp from one cut for 40 meters to one that is 130 feet long.
   It is about 35 feet high (35 feet of 450 ohm line) in the trees and a flat top.

   I was thinking by shorting the feeders to use it on 160 meters as a T vertical. Problem is that I don't 
  have an extra antenna tuner lying around to stick out in the yard at the bottom to tune it. Does anyone 
  have an idea what the feedpoint impedence is for this type of antenna ?

  Also, I wonder if anyone has built a matching network using the method described in K3KY's article
  on tuning bobtails and half squares ?  See http://www.angelfire.com/md/k3ky/page40.html .
  He basically uses a length of RG8 or RG213 for the capacitor and winds a coil for the inductance.

   I bought a MFJ 259 B Antenna analyzer in Dayton this year. It measures inductance and  
   capacitance. If I adjust for the lowest SWR by temporarily putting an antenna tuner at the feed point
   or the antenna and then measure the C and uH using the 259B will that give me the exact values I   
   need for my capacitor and inductor ?

   Jeff