Finally got my Pipeworx sport cat - I am getting a new gasket, nuts and studs for the turbo and will re-align my system with new W4 Mikalor clamps for the rest of the system.
Some Q's:
How likely are the old studs are to shear?
Do the old studs come out OK from the hot side housing?
Or - if they are in good nick, am I best just leaving them alone?