That is correct, mandrel y pipe,full mandrel bent to the stock water heater of a muffler to keep a stock look. Can't hear it while driving. I like it. I have a 92 computer I'm going to toss into it. It's still strapped to the dyno so what the heck. I should have done a baseline with the 6cyl....would have been fun....It's nice to have a dyno in the building with shop. My e55 is just about back together, that should be interesting to dyno. The last time it was run it did 641rwhp 730 ft pds. Just finished with the block, it's sleeved, bored to a 6.1 , custom cp pistons,massive ported heads,cnc valve job, everything is ceramic coated(valves,domes,chambers) balanced , ported blower,all custom arp studs(head,main,valve line) nitrous , ,machined sc clutch ,ported 82mm tab, massive heat exchangers, ice down tank full hand built headers......and on and on and on.....can't wait for that!!! The wagon is fun but.......