Hello Im new to this forum and I have a question. I have a 1997 grand prix gt 3.8. I have the famous coolant leaks and Im going to change out the UIM and do gaskets on the LIM.There are two gasket kits one with location pins and one without. How do I know which one to get or do I have to do the tear down first.Im sure this has been mentioned just not sure where to look. Thanks
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