u will have to really know what u are doing to cut one out of an old car i worked for auto glass for 7 years back in the day lol i dont any more its not that hard if u know what u are doing and have the right tools but if u havent done it before u will crack it even more so if the screen u are cutting out has been done before and who ever did it used to much glue and pushed the screen down to far! even when i worked in the trade and that was about 6 years ago now a heated sierra screen was about 170 so not cheap!