Don't really ever see it mentioned on here but there is also one called a Pedal Commander. I got one for my Canyon and it is great. They are not cheap though, about $300.00. I had a coupon code that knocked off 30 bucks but it is still kind of steep. It was worth it for the truck, I can't justify one for the Camaro because the lag is not nearly as bad.
https://www.pedalcommander.com/
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2017 Black 2SS, M6, NPP, MRC, NAV, and black bowties - delivered 6/23/16