Looking for a Similar Product

Looking for something similar to the products used of the hzemall sight, like the icing and liquid plastic.  I just finished up a fill in for my HVAC Overlay on a 2004 Dodge srt-4 since the dealer wanted 137 for a complete assembly and I was unable to locate a overlay that was manufactured properly.

There were a few issues with filling this over, I used some bondo body filler for the most part, then came in to fill pin holes and such with some wood filler, it worked alright but wanted to know if there are some better products out there.  Will post a finished picture later !  Currently in the process of using the sanding tips for the dash on another post.