you need download L2File Edit can found here. [sHARE C4 - Goddess] Patched Systems, File Editors, GG Killers, L2Dat_EncDec!
Now when you get FileEditor need open armorgrp.dat and search for this ID
7860 Apella Helm a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7861 Apella Plate Armor a,One-piece upper and lower body armor for clans. May be worn by Elder and above.\0 -1 4 4 7860 7861 7862 7863 a,Max. CP increases by 1035; CP recovery speed increases by 40%; In case a damage inflicted by PC is more than 50 M. Def. increases by 5% with 10% probability; and when attacked critical rate decreases by 3. \0 0 0 a, 0 0 0 0 0 0 0 0 0 6 a,When all set items are enchanted by 6 or higher, P. Def. and MP regeneration rate will increase.\0 1
7862 Apella Gauntlet Heavy Armor a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7863 Apella Solleret Heavy Armor a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7864 Apella Brigandine a,One-piece upper and lower body armor for clans. May be worn by Elder and above.\0 -1 4 4 7864 7860 7865 7866 a,Max. CP increases by 1035; CP recovery speed increases by 40%; In case a damage inflicted by PC is more than 50 magic Evasion +2 with 10% probability; and when attacked critical damage decreases by 86. \0 0 0 a, 0 0 0 0 0 0 0 0 0 6 a,When all set items are enchanted by 6 or higher, M. Def. and Evasion will increase.\0 1
7865 Apella Leather Gloves Light Armor a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7866 Apella Boots Light Armor a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7867 Apella Doublet a,One-piece upper and lower body armor for clans. May be worn by Elder and above.\0 -1 4 4 7867 7860 7868 7869 a,Max CP +1035, CP recovery speed is increased by 40%. There is a 10% probability that Speed is increased by 10 and defense power is increased by 5% if the damage inflicted by PC is more than 50. \0 0 0 a, 0 0 0 0 0 0 0 0 0 6 a,When all set items are enchanted by 6 or higher, P. Def. and Weight Gauge will increase.\0 1
7868 Apella Silk Gloves Robe a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
7869 Apella Sandals Robe a,May be worn by Elder and above.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
Ok now just copy lines of armorgrp of pack you download and ofc change ID's for original you search and is all.