1) from haroon radio khi,...West coast customs...maybe the alpine shop in clifton has it as well
2)no samad bond required. had adhesive on one side. but you need a heatgun (or hairdryer) to make it stick permanently
3) i doubt it is reusable in future car...will be too messy to take it off.
best is to use combination of roadkill and desi damping (using foam and/or polyfill)