There was a thread about them "somewhere" here on the site, but I can't find it. I did, however, find this photo I took in Dixon, MO back in 2010 . There was a MFA cooperative in Dixon that got a lot of rail shipments. Someone did an HO model of this car - perhaps Intermountain? Doug
The Intermountain models were announced on this forum: http://www.frisco.org/shipit/index.php?hreads/new-mfa-hoppers-n-scale-ho-scale.5782/ Rick McClellan bought a number of them in HO.