You can convert your gasoline car to electric by contracting out the job to an electric car conversion company. These companies have the requisite skill and know how to be able to give you a conversion that works. They will be able to use tool and equipment that will guarantee that the job is done well.

Contracting out your job to build an electric car will require that you discuss your needs thoroughly with the company. You will have to let them know your options. For example you may want a bigger motor to be able to drive fast but will have to pay big. If you are on budget, they can be able to advise on battery type for example.