Mike, it looks great.
One interesting thing I noticed was the angle of the top front a-arm. The DRB GT40 uses the same '87 Vette setup & the top arm mount is angled quite severely down at the back (see old pic of mine).
My recollection of my old '89 Vette was that the arm sloped down toward the back (but not as much as the DRB).
My guess is that with a big slope, the castor angle will increase substantially as the susp is compressed. Whether that is a good/bad thing is beyond my ken, but it would be interesting to hear some of the experts' opinions.