Moin moin, I would like to build my first Car Hifi system into the car. Since I am quite inexperienced in the area I would need help with the compilation. Installation should not be a problem, am a trained car mechatronics engineer. I’ve been looking out for the following: Acceptable ? Front system :https://www.amazon.de/…/?… orhttps://www.amazon.de/…/?… Sub:https://www.amazon.de/…/?… Radio:https://www.amazon.de/…/?… Only one powercap, power stage, suitable e cable and good alubutyl. Or you say there is another sub etc. that is better and even cheaper. Because the whole moves very hard at my pain limit of the money. Car would like an Astra H GTC –120A alternator– music would be hardstyle etc and hip hop mfg