I tried modifying the 67 along with a few other trains for BVE 4 but they all had big problems with wheelslip that I couldn't solve without making dramatic changes to the adheasion setting on the route that then messed up braking, and after much fiddling with the train.dat, including copying large chunks from existing BVE 4 trains, I lost interest. Getting the plug-in to work is quite easy though, and is really just a case of copying the right files over, and since a lot of BVE 2 trains used the AWS indicator and/or the DRA to indicate if the doors were closed, getting them to work is easy aswell since on and off versions are already available, and if not they arn't difficult to create.