On my S-10, I cut the Y-pipe, (where the two pipes make one)to make duel exhaust.Ran the pipes down the passenger side. I installed mufflers just in front of the rear axle then piped over the axle and exited pipes either behind each rear wheel or both behind passenger rear wheel. I ran both configurations and also tried regular mufflers and glasspacks. Depending on the configurations all produced their own particular sound! I liked the stock mufflers exited to the same side behind the passenger tire best! (This was using the stock v-6 motor)