Hi,
Did you make sure the tubes are seamless/EWR? That is also very important.
Here is a link to Talon's page about his wishbones:
http://www.talonmotorfabrication.co....bones/10165076
He uses 25x2 EWR tubes. I think we can trust him (personally, I have his wishbones on my Roadster)
Hope that will help
.