This needs to come with an crate battery that you can also drop into your car, as well as a wiring harness to hook up the pedals, ignition, telemetry, and so on

This needs to come with an crate battery that you can also drop into your car, as well as a wiring harness to hook up the pedals, ignition, telemetry, and so on and so forth. Without all that you can't really "drop it into your car".