Here is a list of the highest base con items. You can add an S7 (S8, 9 or 10) on accessories, the hammer and the body. You will need a max con substat on the other items. Being in a clan with the con clan passive skill maxed will add +10 con too.
Mask Gold ROSE Captain Eyepatch 45 con
Head Royal Crown 30 con
Back Beta Mach Wings 20 con
Body Exalted Sharp Assailant gear (lvl 220) 26 con
Offhand Gilded Dragonfly Fan 12 con
Gloves New Bourgeois Gloves 16 con
Shoes Legendary Mercenary Boots 20 con
Accessories Vagabond Set 35 con per piece
Nothing will change the base (bold blue) stats of an item, but adding a gem or rune or a substat will remove any current sub on the item
Exalted armor and reinforcement alloys and powder are drops or dungeon rewards only. Higher quality chems can drop anywhere, but definitely drop more consistently in the dungeons. If you don't have a toon that you are comfortable doing dungeons with, then buying the chems from other players is your only option.
This is a little guide to moving substats and here is some information on the new reinforcement system
You need to fight ancient scarabs on the Golden Ring map on Orlo until you get something called Pharaoh's Key. It will go into your consumable tab automatically. When you click on that item it will prompt you to speak to the queen in Muris and she will take it and give you the Vizier's Key passive skill. But she won't even talk to you about that until you have the Fate passive skill. You need 5 ancient tablets to begin that and when you talk to Jones in Junon Polis with the tablets in your inventory, he will give you the 5 fate quests. Those quests just involve talking to a bunch of different npc's. Since your toon is already over level 200, you may already have the passive. Check the unique skill tab and see if you have a Hebarn or Arua passive. If not, I can give you the ancient tablets you need to do those fate quests.
Hope this helps a bit
Edited by HoneyBunz, 21 July 2018 - 09:05 AM.