I sent in my ecm to be fixed. Got it back as bad core,not fixable. After looking at it closer, it is a reman for a 92. This should not be as I have owned it since new and it has never been replaced. Dodge told me it should be # 53008910. According to Dodge # 56027569 or #4723106 should work for a 91. 5 with a manual. Any help would be appreciated. mbrehm