Telkit Classic is designed for Minecraft 1.6.4.
It is available on the Technic Launcher. The current release of Telkit Classic is version 4.2.0, released on Saturday, July 8, 2017.

Custom Sphax Patches
Sphax PureBDcraft Modded Textures for Telkit Classic - July 8, 2017 for Telkit Classic 4.2.0+
Patch the main Sphax patch by placing the modded assets folder alongside the main assets folder. Allow the mods to overwrite existing textures.

Basic Prerequisites (Exceeding These Is Fine)
Technic Launcher
Java Development Kit 8 x64

If you wish to play around with the telkiclassic.zip file, here is the direct download link.

Vanilla Minecraft Packs Compatible with NosPack
VoxelBox Scientific HD (1.6.1+) - superseded by NosLabs Custom Blocks mod
Original NosLabs Resource Pack (1.6.1+) - superseded by NosLabs Custom Blocks mod