TS2020 Bombardier HHP-8 Physics & Sound Mod Pack

I have updated the physics and sound modification packs for Amtrak's Siemens ACS-64 and EMD AEM-7DC to TS2015 standards. I am also releasing, for the first time, the Bombardier HHP-8 Physics mod pack. Included are simpler installation instructions, and minor detail updates. Also, the physics and sound mods are merged into one download for ease of access in case you need to re-install the mod after verifying steam files. Make sure you READ the readme file before doing anything with the packs, and definitely do so before you ask any questions about anything to do with the packs.