Yes the current system slows it down bigtime! Kills my traction hah. Look closely and you can see the seams on each side of the box. Its easily removable for when I hit the track or need to haul something. 2 ground wires, one power and an RCA. Two people can lift it right out subs, amp and cap in one shot.
As for the seats, I removed the covers and washed them in the washing machine. Then mix up a solution of dye with HOT water. I had 4 pots of water on the stove then dumped them in a big *** storage bin from Walmart. Soaked the covers in it and stirred it around until the water cooled down. I think I used 6 packets of dye. I washed the covers with the hose and turned a portion of my lawn black lol. My wife loved it! I let them air dry for about 3 days then washed them again until the water didnt bleed black/purple anymore then let them dry again. Oddly enough the black vinyl on the seat cover also dyed black. Its very messy and use gloves! My dumbass didnt feel like making another trip to the store.