[ZPirate]

From what I understand the major differences in the cars is the different engines and the specific requirements of the two engines, the exterior being slightly different and the the way the interior is trimmed out. The LT4 requires more cooling and more fuel than the LT1 so most of those differences are related solely to the requirements of the different engines. And of course the LT4 is heavier than the LT1 due to the supercharger and related plumbing. So it needs slightly larger brakes and suspension calibrations.

As several have already said, both are great cars. The way I look at it the 1LE benefits from the trickle down of both parts and engineering from the ZL1.