Here

BUT ive had a torch shining through the tail pipes to see what direction they take, the peforated tubes go dead straight till about 3" from the end then curl up and out
This is the path it takes, perforated tubes go up to the red line then solid tubes go up and out

The plan is to chop 3" off the box then weld the pipes direct, ie get rid of the curls, i could chop the pipes off but the bend would have to be 'very' tight to clear,
here we go again
Not sure why its designed like this?




















