Pretty much, but I suspect this whole thread is a troll anyway. It's really almost too perfect.
That said, when these types of questions do come up I wouldn't touch them with a 10 foot pole because all the gear is garbage and mix matching subs is a terrible idea and you're dealing with someone who really has no business trying to DIY. Any advice besides "just pick one pair of matching subs and stick with it" or "you should probably take this to a professional" is not going to end well, and with the quality of equipment and "bass boost at 80%" even that won't end well and you'll automatically be the bad guy when OP burns his car to the ground.
Outstanding troll though OP. You don't get good trolls like this anymore around here. Whoever you are under that name, welcome back and thanks for the laughs.