Let's talk about the Graphite reinforcement. I made a mistake calling it "flop". But the website's name is actually "Flap".
This is a way that they fix the flex of the A arms. But to be honest, people in HK tried it and they went back to the original arms.
For the One Flag motor mount, this is one of the most important options that you can buy for this car. I am not a good driver and I tend to strip the Spur Gear every round because of some accidents before the motor mount. But with this motor mount, the spur gear last the entire night without changing. So far, most of my friend would buy it and they love it. I am currently using the Speedway Pal version of One Flag.
I personally would not buy GPM options parts because their best stuff are for export only. They will usually leave the inferior quality in HK. To be honest, GPM is late this time because for most people with Barracuda in HK already bought the "One FLag" motor mount. So, I don't know why do they bother to buy one? Maybe they are planning to sell it in Europe and US?