my middle part of the exhaust has cats, but has two pipes going to the cats. can i disconnect so i put decat pipes on. i don't have no idea what these pipes do. thank you.
on my 300zx i've got 17 inch rims, with 235/45zr17 on front and 255/40zr17 on rear. what i would like to know is could i put 245/40zr17 alround please.