RestoMod OptionsDrivetrains include LS3 or more with 5 or speeds with overdrive or automatics. And if you resto-mod the right way you can convert back to stock at any time. Stock is a vehicle that has not been modified and is in the same configuration as it came from the factory. The reasons for performing a resto-mod on a Vintage or Classic Corvette could include the owners desire to have either modern conveniences, improvements in safety or reliability and/or improvements in street or track driving performance. Restomods for modern convenience and safety may include options such as air conditioning, power windows, power steering, power brakes, stereo systems, etc...