LT1 swap,,,
Picture for the CTS-V version
Picture for the ZR1 version
As you can tell, if you used the ZR1 version, you'd need to get the CTS-V's bell and tail shaft housings. Here's the MG9 (CTS-V) spec sheet and the MH3 (ZR1) spec sheet
Alternatively, for the 07 T56 MM6 RPO(Specs and Pic) handles 470ft/lbs. (06, and some 07 models like for ZR1 and CTS-V only handle 400ft/lbs, which is why I'm giving RPO codes).
I would love to have the T6060 Ratios, but I think mine will work good for the low cost of $1950.

Any Gen III Engine Longblock will go directly into that car without any modifications.
I'd build me a little LS1 383 Stroker and get a Cam in it, LS6 Heads and Intake, and tear some **** up..
The Best V8 Stories One Small Block at Time





