VNT controling, anything new?

[clacker]

So I have searched around and most posts are a couple years old now (and missing key photos), anything new or exciting to read about? I am replacing turbos on two projects, and want to go VNT but need some guidance...before I spend a grand each on replacement turbos (not going the junkyard route, want new stuff). Both projects are 80s diesels pre electronics. If I need to make it semi electronic thats fine, so long as there is guidance and reliability/simplicity (road tripping not daily commuting).
My goals are early boost for drivability NOT ultimate performance, I cannot source a small frame turbo to fit so that is out of the question (new that is, all these old Garrett units are long obsolete), GT28 is the smallest option available in T3 form (bolt on) which is very large!
First project is a Winnebago Lesharo with Renault J8S 234 2.0L turbo diesel, other is a 300SD and 240D (parallel projects).
The Winnebago has a smaller turbo (TAO305) compared with Mercedes tds a/r 0.36 turbine vs 0.42 but otherwise identical.