hey bruce
what i can tell ya may not be to much but looking at the front of the motor so the right side would be on your same side look at the timing cover if the bottom is square its a late 93/95,otherwise its an earlier one.sorry i cant tell ya any morwe than that maybe try gordon or call rich zizza in connecticut hes a bloomington judge who is in charge of the lmsi which covers the zr1.
later
peter
