I've had an adjustable aftermarket wastegate for the fist for like 6-7months for $100 with the cyborg. I've used it on a stock turbo and as long as your tuning the car, you can use it. But.... I've never offered it to anyone because you can add boost with the stock wastegate via race tuner or a pro-tune, so a mechanical wastegate upgrade is not needed. Its only needed on the cyborg because with increase air entering the motor, it also increases exhaust. The increased exhaust pressures push the stock wg open. Without the increase in air though... You have no reason to need a tighter WG spring.
Don't get me wrong... That is a nice piece. I'd personally like to have it. But #1 you don't need it. #2 if you did need it, I could sell you one for 1/2 the cost ( borg-warner OEM actually ).
The only reason I could MAYBE see that someone with a stock turbo needs an upgraded WG would be if they were running nitrous, and we all know that no one on this forum has that kinda balls, lol.