Add to Turbowarp as custom extension?

Turbowarp has a option to import a custom extension from a url. I was wondering if there was a specific url I could use to add this box2d extension into Turbowarp.

[camqu9]

It is source code I don't think he would have a issue he hasn't been maintaining it since it's still using a old version of scratch

[Waakul]

Try this: https://raw.githubusercontent.com/griffpatch/Box2D.js-Scratch2-Extension/gh-pages/GriffpatchBox2D.v0.3.js