[SRT8N8]

Don't have one yet so bear with me. Hows the space underhood for one or more turbos???

 

[LS9SS]

The engine bay is pretty similar to the G8. There was a kit for the G8 to put a large single turbo on the drivers side where the air box is. APS and UPP have twin turbo setups for the G8 that mount the turbos under the car next to the transmission; the APS kit however is no longer available. STS also has a single or twin turbo rear mount system for the G8 that mounts the turbos where the mufflers are.

I suspect most will stick to a twin under mount kit or a rear mount kit compared to a large single turbo in the engine bay due to engine bay temperatures.

There are no turbo kits available for the SS at this time.