Did a lil research,
SLP will be making a 03' LSX Monte Carlo This is why I believe that next year it will have the L67
Check it out: http://slpeng.com/media/preview/montecarlo/
Oh and Hell YES to the GTO that thing is gonna be badass cant even wait..... I garuntee like 2-4 years after its release they will make a Judge edition....probably packing upwards of 400hp