Oh boy here we go again...
To quote one of my previous posts on the issue and to give some back story:
ANL made the Challenger and TTT-6, uploaded to RRMods.com. Later they where joined by the FEF. ANL then became a partner with Jointed Rail, and requested his content taken down off of RRMods so it could be updated and redistributed through Jointed Rail. They where taken down however I believe they where put back up without ANL's permission. Because of this, ANL decided to not re-release his content immediately on Jointed Rail, and instead decided to take his time updating it. Of course, because people don't know the whole story they believe ANL was being selfish when instead he was just protecting his hard work. A large amount of people who didn't have the content became gimme-pigs and ANL was put under a lot of pressure to re-release his content so he walked away from Trainz for a while. Now that people are just redistributing his content freely so I'm sure he just says to himself, "Why bother?". In the long run it almost seems like it was a futile effort to make accurate models of neglected Union Pacific engines as the community took it all for granted and treated it poorly.
So long story short, no, there is no way to get them and the odds of it being released now are slim and none.