If you look in the Chevrolet Performance catalog under the Camaro parts you will see the ZL1, 1LE and Z/28 parts that they offer you to upgrade the V6.
http://www.chevrolet.com/performance...s/1le-zl1.html http://www.chevrolet.com/performance...parts/z28.html But if you look at the motors that are in the catalog you wont find any support upgrades for the LLT, LFX or the LGX. You will find that the LTG is listed as a crate motor. If its a crate motor GM will produce upgrade parts for it because they see it as a motor with race potential.
Look I love the V6, I own the V6, but I have been watching this play out. I will explain, (keep in mind that this is pure speculation based on tea leafs and patterns found in the powdered sugar on a doughnuts.)
2010 - 2015 Chevrolet Camaro V8's ran these engines.
6.2 L
LS3 V8 (Manual SS only)
6.2 L
L99 V8 (Auto SS only)
6.2 L
LSA V8 supercharged (ZL1)
7.0 L
LS7 V8 (Z/28)
When you look at the V6 you will see
3.6 L
LLT V6 (2010–11)
3.6 L
LFX V6 (2012-15)
(The hobbling comment comes from the fact that GM wont support a V6 long enough for after market to grow for that power-plant)
And now the V6 has a new 3.6 L LGX. That is 3 engines in 7 years and non of those 6's was a turbo.
I know the LGX has a lot of HP for a V6, heck it has HP numbers that will put it equal to or better than most any Camaro V8 before 2010. How ever it has one small problem. Its that fuel saving ability that it has when sitting at a full stop. The engine shuts down and restarts when you hit the accelerator. I hope that can be turned off by the driver because I can see that start up affecting your 1/4 mile numbers.
As for the wheels on the 6th Gen V6 and T4, I was not referring to the diameter. You can get 20" rims with the RS package just like the ones on the SS, but unlike the SS all 4 of the V6 and T4 tires are the same width. I'm not sure how that may affect upgrades.
I do know that the 5th Gen stance is the same LS, LT and SS