Hi all. I recently acquired a 1994 Caravan 3.3 that now needs an engine computer, 4727545. I have not been able to find a replacement. RockAuto shows my computer number as an alternative under Cardone part number 79-7442, but other suppliers do not show my number for this part. I contacted Cardone direct and they replied that they do not have a replacement for 4727545. Any input? Or anyone have a good used unit? thanks