Iirc Mamba Turbo sell an affordable iwg actuator that has piston and o rings as opposed to the conventional diaphragm. Or spend a bit more on the Forge item that others copy. The Turbosmart iwga's look great too...
Shoot them an email via their site with a pic & description of yours. The billet iwga's are modular. Take a peek at the options on the Forge website , for eg.
Or ask around tuning shops, they might have spares. Matt reckons iirc even .5 bar iwga's are good for 25psi with a 3port & tune. Eg I'm swapping out my 12psi on the avo for a 7psi so I can have that failsafeability when required. If it didn't work out as planned I'd go billet type for the ability to change springs.
hi mate not sure if these will help but I have a vf second hand one and also a brand new garret one of a gtx 3071 here if you want find out if they fit and if do I have them here ready to go