The Mazda RX-7 is not an extremely heavy steering car but compared to modern cars it takes the fun out of parking in town and taking hairpin turns. This problem can be worsened when wider tires and/or a smaller diameter steering are fitted.
The EZ Power Steering designed for the early Mazda RX-7 makes the car turn as light as a modern car without loosing the "feel" at speeds. The unit is completely hidden under the lower dashboard cover and no evidence of the conversion can be seen under the hood.
Dr. Felix Wankel would approve!