I did exactly that. I didn’t mention it but Marion noticed and asked about it.
I put it up on thingiverse as-is. It doesn’t have a good print orientation and needs supports. DW660 blower redirection by Jamie_K - Thingiverse
The two little pegs go into the ‘nostrils’ and the upper holes are for adjustment screws to tweak the angle (#6 sheet metal screws with the ends made blunt).
I’ll warn you, this blower makes a big mess.