[Accelo]

I also ordered a "exact fit" radiator. It didn't even match up with the factory hold downs.
Never even got to the fittings end of things.
Ended up sending it back.
I ended up with a Dewitt radiator for a LS conversion. Ordered it in black, like an original, even though it's Aluminum. I came with the Spal fans. It was not cheap. But it fit the first time and saved me hours of frustration. Building on of these trucks is difficult enough with out the "It fits" but really doesn't.

I had similar issues with my fuel tank and SS brake lines.
Caveat Emptor