Seats and Wires

I have a 1991 Plymouth Laser that I am going to be putting a wall in. I was just wondering if I change the seats to a different material is there any material that can increase my score. Also wondering if it makes any difference if I run my battery wires under the car compared to inside the car. I am running 4 strands of 1/0 and didnt know if they would all fit good inside the car. Any info helps.

if u mod the chairs to increase spl u will be put in supermod it is a mod forward of the b-pillar u have to have oem or oem equivalent seats. as for the wires whatever is more convenient but if u do run them under protect them

I think you can use the regular racing type seats, Just can't be hard plastic, just make sure there dot approved