Tornado Custom

The beater version of the Tornado is available for sale but there is no upgrade path (Transformation) available at LS Customs. 

The Tornado is a distinctive vehicle & worthy of the custom treatment available to other classics like the Chino etc.

https://gta.fandom.com/wiki/Tornado_Custom

https://pbs.twimg.com/media/Ce6kvtZWAAAB2lX.jpg