Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not a direct replacement.

I bought this to replace a corroded OEM aluminum water neck on my 1991 F250 5.0L. However, after installing it, I went to hook up the overflow tube, but the nipple on this water neck was too small. I ended up glass beading my OEM water neck and putting it back in. It looked decent, but was useless.