Does anyone know which cars can be made your "personal car" by stealing? Or which ones can't?
Out of them, is there a "best" non-purchased car in terms of speed/acceleration/the usual?
EDIT: I'm making a list over here, feel free to contribute: Which stolen cars can you bring to LS Customs and what are their sell prices in GTA Online?
Best Answer
You can still upgrade the Sports cars like the Inferno, Banshee, etc. However, you can not upgrade them if you stole it. By LS Customs telling you the car is "too hot" it means that it's a Super Sports care that was stolen. To upgrade one of the vehicles, you have to actually spend your money on the web and purchase them. No worries though, buy insurance and a tracker for them and you will always be able to get your vehicle back even if it blows up.