Thanks so much for this DIY. I have an M Bumper downstairs waiting the exact same repairs.
Getting info on bumper repairs has been a bit of a chore. Most suppliers of the repair kits are not very knowledgeable of confidence inspiring.
A couple of questions..
Your donor material to fill in the reflector ports..Did you use the plastic that you trimmed from the washer supports ?
On installing the bumper. Im going from a facelift to the M Bumper. I have studied the parts list and except for some sticker shock (2 brake ducts, 2 support brackets, and a tow hook cover priced out at $285 plus 13% tax
)
I have been warned by a couple of Zedders that I also need a metal support / bracket for the lower bumper. Actually it was called 'the metal thing" ...
Can anyone comment on these concerns ...
Cheers
jafxdwg