Mmmm, no, what I see is that all EMD 2 axle bogeys are Blomberg type B or type M, and the type M was apparently a type B with some minor changes that only rivet counters would care about. Built in;
GP9 trucks,<kuid:38304:50100>
f7_bogey,<kuid:-1:0>
Either of those would work for a GP38, a more detailed one;
Blomberg B Bogey Black,<kuid2:60238:50028:1>
Blomberg B Bogey Weathered Black,<kuid2:60238:50027:1>
would probably look better. About 4000 polys, might or might not be a performance hit depending on how many geeps are used in a session.