Product review (5 stars): Take your time
This worked fine for me on my WED92HEFW dryer.  Yes, the printed instructions were not quite up to date with this newer model, but with that and the YouTube videos I had watched it was no trouble.  I did try to do the replacement without removing the front bulkhead and drum.  I could remove the existing duct tube using a ratchet and socket to remove the sheet metal screw.  The problem was getting the new vent tubes into the dryer through either the front or the new side hole.  Just did not see a way to be able to get the tubes (with the hose clamps installed) through either opening.  I also wanted to put some foil tape on the front connection where the sheet metal screw attaches.

So I took every thing off the front and removed the drum.  It is a little difficult to get the drum belt off the tension pulley from the front.  But watching the YouTube videos helped. Just sat in front, reached my left hand in on the lower left of the drum and found the tension pulley.  Reached my right hand in on the lower right side of the drum.  You cannot see what you are doing, but with the left hand grab the pulley and pull it to the left to release the tension and with the right hand pull the belt toward the back of the dryer, off the pulley.  Release the pulley and pull the belt off the blower drive shaft toward the back of the cabinet.  Be sure the belt is completely clear of everything below the drum and then you can lift the drum up and out of the cabinet.  Then you have all the room in the world to remove the old tube and put in the new 3 piece tubes to vent left, right or down.  Took me 2-3 hours.