his Special Encounter would be avaible only to players with Explorer Perk
rare items = Bozar, Turbo Plasma Rifle, Bridgekeeper`s Robe, Dyncacords, Plasma Torch, etc
I think I will say "no" for those modules. It will just make possibility o supah-powerbuilds.
Each module will be useable only once per alt, like it is in this Small Guns Skill quest.One time bonus wont help a lot in making super PB, you can already make it with drugs.
You can't imagine how much would 4 free SPECIAL be for a powerbuild
What can be find inside: Some random rare items* or one of the following modules:
He didn't say you can encounter it only once
Alts will be created for each other chip
It has to be totally random without any possibility of highering the chance to find it.
Following the Wiki: Explorer perk - The mark of the Explorer is to search out new and interesting locations. With this Perk, you have a greater chance of finding special places and people.