The labor/time is not much different, it is the cost of the core parts.
The rearend, trans, engine, wire harness and ECM are different. The cost of just these items (there are more) and the difference between the cost of a base V6 and a 1SS are about the same.
With all that said....we'll be more than happy to convert your V6 Camaro into a Nickey Super Car
