I just figured it out. I didn't see the bolts to remove the frame from the track. I had to use a long 1/2 inch wrench to get to the outside nuts for the bracket to the floor going under the little gap from the seat to the floor. Now I see how it is done on the 48.
_________________________
1948 Chevy Fleetmaster Coupe, Purchased 6/20/2010
1947 Chevy Fleetmaster Coupe Leaving-Gone Sept 2011
1996 Monte Carlo 63,000 Miles, purchased new