Most Custom Versons will include their own runtime installs packaged but for those versions that don’t. I’ve uploaded both DX7/DX8 Runtime installations.
DX7 runtimes is used for EO 2.0 and EO 2.3 based engines:
DX8 runtime is used for EO 3.0 based engines:
EO 4.0 already has their own runtime packaged but here’s that installation also: