Regarding the turbo parts list...

What I do not see on the parts list is a transmission that can cope with the torque and HP?
I would assume you are going to run this thru a manual tranny?
Or and automatic?

If an automatic... then just get an SRT-6 and start there...

If a manual... be aware that the reason the SRT-6 is only available with an automatic is that
none of the MB manuals could cope with the rigors of the SRT-6 engine output for the long haul.
Something to think about...