fan shroud question

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I just dealt with all this but mine is a 3 core CC526 and it will only accept a 70 to 72 shroud. The problem I had was the pressed in nuts came right out (which by the way are metric m6) but the good part was I got these 1/4 20 fasteners and you can put them where ever you want
Here's a better picture15000566783581215887529.jpg