The 1984-1989 Corvette Fan Upgrade contains two rows of one-inch tubes made of aluminum. We got rid of the plastic tanks and the small core and we went with just the all-aluminum direct fit radiator. In order to make it a direct fit radiator, we had special rubber cushions molded to fit it. Since the radiator is twice as thick as the stock radiator, we had to make room for the condenser and the radiator to still fit within the cushion and still fit within the enclosure. With it being a direct fit, it's going to go in the same way as the other one is coming out. Once we get the radiator set in there, the rest of the enclosure can go on it. All bolts match up into the same points. Once you have the bolts secure, plug it in and your single fan is ready to go. If you choose the DeWitts fan, apply the same steps. The main difference is, we're increasing the power of the fan.
We have a cutout on the stock shroud that must match the cutout on the DeWitts shroud. All you have to do is line up the fan and the shroud and then the bolt holes line right up. Bolt it in with the stock bolts, plug it in with your stock plug, and your result is 30 percent increased fan power.