thanks for the link, that was the first place i checked lol, found some info but not exactly what i was looking for
i know, it looks so clean and already have a Natural and AGA T2 tank on it, found out I actually need the 1st gen AGA T tank in order to do this mod so I'm slowly getting somewhere
Sorry mate, but you seem off track. You only need one AGA T or actually half of one and the center post. I posted about an AGA-T hybrid I made with the Paps and that needed two top decks from the version one AGA t.
As fat as I know all AGA T center posts have the same thread as the 510 connection so the center post just thread straight into the Natural topcap/510 connector then the top deck with the tanks sandwiched between.
Your issues will be seating the tank Inge the drip well of the Natural ( I'd imagine you would need to create a ledge for it to seat on and receive an o ring to seal it.) then you need to find a way to anchor the positive pin inside the topcap/510 connector of the Natural some delrin sanded or shaped down to size from a drip tip with a electrical wiring plastic sheathing would be my first thoughts. Then you would just need to adjust and space the positive pin to connect with the battery. All pretty straightforward except for the ledge for the tank, which might be able to be avoided with some lateral thinking. Think outside the box outside the room outside the town outside the country etc LOL

Hope this helps.