Alpine GTA Turbo parts wanted

Does anybody have a spare GTA turbo exhaust outlet casting with the waste gate included?
My turbo has 3 equally spaced studs that do not fit the exhaust pipe attach flange. Maybe someone knows where I can get a suitable flange instead of changing the casting?

Sounds like you have a 25T wastegate housing .I had this with a hybrid unit I've just fitted using a 25 turbo in exchange .I've just put an old GTA housing on it .
Two studs will line up and should hold well enough as long as you use the nut locking ring .
I'll have a dig round in the garage and see if I have another GTA bit .

I've not got another GTA housing but do have a 25 flange You'd need to slot it to get it over the pipe flaring though ...........................Your's anyway for postage cost .