Suez '73 is one of the best games I've got. Here are some rule fixes that I wrote up years ago. Too much combat occurred in one night. Israeli tank losses were twice historical levels, infantry three times, Egyptian infantry losses four times, Egyptian tank losses equally high. Israeli units had captured three game turns worth of ground around Chinese Farm.
Mechanised units can dismount, move through terrain impossible for tracked units, then remount.
Similarly, BMP equipped infantry get most of their AT fire from the BMP's, yet the Israeli's cannot direct AT fire against the BMP's. Each player has a limited number of combats and barrages per turn, rather than one of each per impulse. A player must use their full allocation of combats, if necessary they may declare a movement phase of 0 movement points. If the phasing player declares combat, then both players fire, as per the original rules. A combat phase is bombardment, defensive fire and simultaneous fire.