Hori Tekken 6 =/= Hrap V3.
The Hori Tekken 6 Wireless
Hori Tekken 6 Wired
Hori V3 (Non-pro)
Hori Hrap V3 SA PRO
Hori Hrap V3 SA PRO KAI
Yeah we can easily be talking about 5 different sticks with the statement of Hori Tekken 6 vs Hori V3 sticks.
And no none of those 5 are the same. Well the Hrap V3 SA PRO and Hrap V3 SA PRO KAI are the only one with any similarities.
The PCB in the Hori Tekken sticks are garbage, especially the wireless. The Tekken 6 sticks are meant to be collectors items, so you might get more from selling the Tekken 6 stick.
If you want to know everything about dual modding try the following thread
[Dual Modding 101](Dual modding 101