Join Date: Aug 2011
Location: Montgomery County, MD
Thanked 22 Times in 20 Posts
i know this as the M50 Seat Lumpectomy.
I did it a month ago, dremeled out the lump, went out and bought some Polypropylene plastic sheet (sadly my sheet was too thick) and plastic welded it for a more OEM look.
Then I filled in the void with Carpet padded i got for free at a carpet installer. and reused the same brackets to mount back on.
At the same time I actually installed a gel insert in my seat for extra comfort.
Cost me about $75 including tools.