If you're not interested in procedural junctions, check out the NS-series track from Jointed Rail. It's available on their website. If you want to go for something on the DLS with a bit darker ballast, you might be interested in the SAM track. There is one with both a rusty as well as a new rail.
JR NS track with matching ballast:
JR_NS_tex_clean,<kuid2:45324:35010:1>
JR NS 3,<kuid2:45324:38030:1>
JR NS 4,<kuid2:45324:38031:1>
JR NS 5,<kuid2:45324:38032:1>
JR NS yard 1,<kuid2:45324:38033:1>
JR NS yard 2,<kuid2:45324:38034:1>
SAM track with matching ballast: (Look for SAM textures).
SAM Track - III/B class 3 v1 LOW,<kuid2:132952:100402:2>
SAM Track - III/B class 3 v1 RUSTY LOW,<kuid2:132952:100403:2>
The low-series track don't have the screw bolts, which makes the tie plates look more like our spiked plates. There's a ton of other track as well, which might be suitable in this series including some of the wooden track.
John