Yeah, those Fresh Cherries cars are a real blessing for us 70's era modellers. I managed to hunt down 60 of the cars and 50 vans .... that's probably why you can't find 'em !!!
I built four tri-levels and four bi-levels all from Accu-rail kits. The big difference being I shortened them up to 74 foot cars which look and perform better on my less than ideal radii.
All eight cars weigh about 3-1/2 pounds. Two engines have no trouble walking all this up a 2-1/2 per cent grade. The decoders I use have BEMF so there is no bucking or running away even on the down-grades !!!
Here's a picture of one of my shortened autoracks which really is more accurate for the length of 70's eras racks anyway. Whadda ya think ???
Mark.