I have a 1970 A100 pickup, it had this 150 pound chunk of cast iron behind the gastank. Do most a100's have this or is this a pickup item? I am familiar with the econoline and chevy van counterweights, but this is something I don't know about the A's.
https://i.servimg.com/u/f42/12/42/38/64/a100_i10.jpg
https://i.servimg.com/u/f42/12/42/38/64/a100_i10.jpg