Check Out That Chassis
Moving the steering linkage forward a little will help your problem and create the least issues. When you change the height of the steering for a rack or on conventional linkage you can make bump steer problems. You can over come some of this with bump steer spacers at the steering arms. The best fix would be just move the motor back, an inch or 2 in your car will help the weight transfer.
President, S & W Race Cars