Here's what I have found up to now. Remember they only restock once a week.
Use
SUITS
- Maverick Suit Grade 2 – Boole's Inheritance
- Maverick Suit Grade 3 – Rustah Works / Frobisher Horizons
- Dominator Suit Grade 2 – Al Saud Depot / Vesalius Refinery / Hugh Estate Bryant Hub / Carlisle Base / Kettle Platform / Pann's Inheritance / Julian Hub x2 / Brom Penal Colony / Nelder Landing / Reed Barracks / Yano City
- Dominator Suit Grade 2 + Extra Backpack – Slusser Lab
- Artemis Suit Grade 2 – Prunariu Penal Colony / Blodgett Gateway
WEAPONS
- Karma L-6 Grade 2 – Nicolet Enterprise
- Karma L-6 Grade 2 + Stowed Reloading – Asher Orbital
- Manticore Executioner Grade 2 – Vesalius Refinery / Coney Installation
- Karma AR-50 Grade 3 + Faster Handling – Thurston Installation
- Karma P-15 Grade 2 – Marley Base / Nicolet Enterprise
- TK Eclipse Grade 2 – Peterson Terminal / Pauling Ring x2
- TK Aphelion Grade 2 – Stephenson City
- Manticore Intimidator Grade 2 – McCarthy Depot
- TK Zenith Grade 2 – Czerneda Vista
- Manicore Tormentor Grade 2 – Boming Installation / Vesalius Refinery
- Manicore Oppressor Grade 2 – Hadfield Depot
Good luck.
Source: https://www.reddit.com/r/EliteDangerous/comments/nr7j5g/preupgraded_weapon_and_suit_list/