There should be a filler piece next to the V-6 shroud, that comes out. Then you move the rubber seats over to the end of the support, and hang the radiator. The problem is what car did the V-8 shroud come out of, not all water pumps are located in the same plane, so therefore the fan may be located wrong too. I discovered that a Chevy V-6 shroud worked with a Pontiac 400 after a bit of trimming. A Chevy V-8 shroud worked with a Pontiac 301, as did an 80' Firebird shroud. A Buick V-6 shroud did not fit anything I had except the Buick. I think if stay in the same family of motors, you are home free. You'll find out quickly if it fits or not.