ILW’s eco-427gm is a remanufacture of an EMD locomotive (in most cases a GP38, 39, or 40) with a Cummins QSK60 prime mover powering an AC drivetrain. They have a gratifyingly high tractive effort; 120,000 pounds starting for a ballasted machine and a modest increase in horsepower over an unmodified GP38/GP39, and, of course, are EPA Tier4F compliant.

In 2023, the BAR started a crash program to remanufacture their remaining DL17s with upgrade kits sent down east from Canada; #808 was the first to come out of Derby in August 2023.