The best replacement for jdm is usdm.

The best alternatives to jdm are rated as following:
★★★★★  usdm
★★★  edm
★★  euro
★★  ricer
★★  oem
★★  dtm
★★  dsm
★  usdm sti
★  kdm
★  usdm integra
★  odm
★  usdm subaru
  usdm engines
  usdm supra
  commy

Your alternative for jdm is not listed? Suggest!
Speaking about jdm, one probably shouldn't forget about icsp.

Other search terms related to jdm and their ratings are:
★★★★★ icsp
★★★ mplab
You have in mind a companion for jdm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of jdm in all years. Click on graph for more.
jdm
usdm
edm