I note that Wiki mentioned a recall due to a tensioner bearing failing a little too often.
I was curious about the engine as it was fairly attractive for a modern design.
The cam covers were fairly clean and pronounced like traditional engines of the golden age.
With the aluminum heads weight should be decent.
I will have to look up the CTS but I bet they are ugly and hidden under some sort of cover to hide their shame, like most modern engines.
Looked up the CTS.
The earlier version looks similar to the Catera engine but should? accept the optional manual trans.
The newer engines are bigger and have more power but get progressively uglier as expected.
Idle curiosity ask what you would get if it were stripped down and fitted with a simpler control.
No doubt would lose some power but would be much more user friendly without the VVT and other over-complication.
For myself I'm still using a simple 3.8 Buick, pushrods and carburator.
From the Catera it was the IRS with alloy center I was most interested in.
Not sure what the CTS might have there.