I dealt with Extreme Online for upgrading my C7 Z51 rear spoiler to a Z06 stage 3 with exposed carbon fiber end plates. The main section installed easily and lined up very well, it was painted Carbon Flash colour and was quite good quality. But the carbon fiber end plated were horrible quality, some bad carbon fiber areas and the clear paint was either too thin and didn't cover properly in some areas or too thick and showed runs.
They were quite good to deal with though, both through email and messenger, and after requesting photos they quickly sent replacements, unfortunately the replacements were no better, they admitted that their entire inventory of the exposed carbon fiber product was poor quality. As a new batch of of the real carbon fiber wasn't going to be produced for a while they sent me a carbon flash painted version and agreed to send me front canards as a bonus for not receiving the exposed carbon rear end pieces.
My question... Is their front splitter good quality in terms of fit and strength? I read many reviews that say the holes don't line up and it's a pain in the a$$ to install, others also say the paint quality is questionable.