A re-imagination of old tech focused packs from the 1.2.5 era.

Each mod has a similar purpose the mods from 1.2.5 had that weren't or aren't yet updated to 1.12. For example Thermal Expansion replaces IC2 basic machines, Mekanism replaces IC2 Advanced Machines. Thermal Dynamics, Mekanism and Immersive Petroleum (Not yet Updated) replaces Buildcraft. Immersive Engineering replaces Redpower. For a full list of mods that I considered valid replacements and to see what mods I plan on including when they are updated, check this doc.

Main mods:

Thermal Expansion
Mekanism (Not Updated Yet)
Immersive Engineering
RFTools
Steves Carts
Forestry
Refined Storage

Power Generation Mods:

Solar Flux Reborn
Extreme Reactors
Immersive Petroleum

Aesthetic Mods:

Dynamic Surroundings
SoundFilters
BetterFoliage
Blur
Quark
Bibliocraft
Earthworks
Rustic

'Magic' Mods:

Reliquary (Not Updated Yet)
Soul Shards
Thaumic Potatoes
Cyclic

Full Mod List:

Rustic (by thatguy3039)
JourneyMap (by techbrew)
Iron Chests (by progwml6)
Just Enough Items (JEI) (by mezz)
Forestry (by SirSengir)
AutoRegLib (by Vazkii)
Quark (by Vazkii)
Just Enough Resources (JER) (by Way2muchnoise)
BetterFps (by Guichaguri)
Hwyla (by TehNut)
More Overlays (by feldim2425)
Item Scroller (by masa_)
Earthworks (by Alsnder)
MovingWorld (by darkevilmac)
Davincis Vessels (by darkevilmac)
Scannable (by SangarWasTaken)
Blur (by tterrag1098)
CreativeCore (by CreativeMD)
ItemPhysic Full (by CreativeMD)
Shadowfacts' Forgelin (by shadowfactsmc)
ShadowMC (by shadowfactsmc)
Large Veins (by shadowfactsmc)
BiblioCraft (by JDSinclair)
Refined Storage (by raoulvdberge)
ZeroCore (by ZeroNoRyouki)
Extreme Reactors (by ZeroNoRyouki)
AppleSkin (by squeek502)
Soul Shards: The Old Ways (by SgtPunishment)
Reborn Core (by modmuss50)
Steve's Carts Reborn (by modmuss50)
Redstone Flux (by TeamCoFH)
CoFH Core (by TeamCoFH)
CoFH World (by TeamCoFH)
Thermal Foundation (by TeamCoFH)
CodeChicken Lib 1.8.+ (by covers1624)
Thermal Expansion (by TeamCoFH)
Thermal Dynamics (by TeamCoFH)
Guide-API (by TehNut)
Biomes O' Plenty (by Glitchfiend)
Dynamic Surroundings (by OreCruncher)
Sound Filters (by Tmtravlr)
Thaumic Potatoes 2 (by zxc74171)
Cyclic (by Lothrazar)
Immersive Engineering (by BluSunrize)
Better Foliage (by octarine_noise)
Hammer Core (by apengu_)
Solar Flux Reborn (by apengu_)
McJtyLib (by McJty)
RFTools (by McJty)

Good Old Times