Ronnie, my muffler man, told me he couldnt fit a dual rear exhaust becuase of my spare tire. Ive seen tons a 4runners with them, and looking underneath, its seems that if he cut my pipe where it starts to go down, he could run one parallel to the cross member. Can I run a dual rear with 2.25" pipes without moving my tire? also, would i have to go down to 2" pipes with a dual rear for backpressure or would 2.25" pipes provide enough?