If the body is in good shape try to keep the car original or only make changes that can be easily returned to original. Rust free, low miles 1800-Es are getting harder and harder to find. This is my list of suggestions. Change to an electronic ignition, buy IPD's header, IPD sway bars, better shocks. The 1800-E is pritty fast when properly tuned. Make certain the valves are properly adjusted, double check the ignition dwell and timing; I have found that makes a major difference in performance,and set the fuel pressure to 30 psi.