Yes I do . All I'm saying is you can take an ICE car and drop a high horse power fuel injected new motor that will be computer controlled emission legal and drive it on the street and or track. You can't modify an older Tesla as easily. I wish you could. If I purchased a used Tesla and the battery was no good I would want to upgrade the battery pack, motors and cooling system with a larger radiator and larger radiator opening Will tesla sell me the hardware and software I would need.to do it I'm surprised no one has come up with their own software to run a Tesla.