Some industrial manifolds position the turbo like a 3rd gen manifold, but have square ports. If you can find one of those that would be best. But I've heard of people hogging out a 3rd gen manifold too.
Or you could try one of the spring only actuators. Bullseye Power makes them as well as Engineered Diesel and I'm sure some others.

Or you could try one of the spring only actuators. Bullseye Power makes them as well as Engineered Diesel and I'm sure some others.