 Casarini intended to use an existing, inexpensive V8 engine that would reduce the purchase and maintenance costs of the car.In the tradition of De Tomaso cars, he wished to use a Ford V8 and explored the possibility of using the new Ford Modular 4.6 L V8, but discovered that Ford was not yet ready to sell it to manufacturers.Casarini learned that TVR was investigating the possibility of using differentials made by Australian company BTR Automotive in its cars.