[N0DIH]

You can likely adapt the 301 Turbo or 3.8L Turbo wastegate actuator and it can be made adjustable easily.

Also, it is a 2 chamber actuator, it has a second side that you attach to manifold vacuum, not the boosted side, before turbo, that will open the wastegate at cruise to slow turbo to decrease backpressure to increase fuel economy. But it also slows turbo speed that will increase the lag a little when you mash the gas.

I hate the term "turbo lag", as people take it out of proportion. It is a loose term. If you have driven a turbo car, especially a v8, you know this lag is minor and still the car is MUCH faster than a non turbo counterpart. So take it with a grain of salt...