Name: Vakratunda mahakaya shloka
File size: 330mb
File format: MP3
You can download vakratunda mahakaya shloka on the site hagopjewelry.com
The closest I could come to this mantra is the following line from the Mahaganapati Shastranam Stotra from the Rudrayamala Tantra that contains the first sentence: Good amount of research.