has anyone investigated if the 3.5l upgrade would work on a 6 speed CL-S??? we know that the engine mounts on the 6 speed engine block are different than the engine mounts on the automatic engine block because of the need for different headers....if this is the case, is it possible that the 3.5 upgrade CANNOT be applied to a 6 speed car due to the non-relating engine mount positions???

 

The 6spd tranny mates up to the 3.5 block. Also.. the motor-mounts are on the tranny, not the block... so only the passenger-side mount (which stays the same) is connected to the block. It's the same conversion... no different than the auto.

If my motor blows up... its going to become a 3.7 liter