This is gonna be another one of those threads where i answer my own question - Mods, can you move this to the NYA section?
-Eastern Fence(Calverton): Has a Shuttlewagon
-Prima Asphalt (Holbrook): Has a Trackmobile
(both per google earth)
The short life of 397 can probably be kinda be explained by the circumstances of it's purchase. The plant it most likely served at (Long Beach) was designed for coal, but was apparently re-fueled to either oil or nat. gas, which spelled the end for the large rail infrastructure used to fuel it and possibly 397.