The mounting holes from side to side are 23 1/4" centers and the mounting holes up and down are 11" centers.
I see other mounting holes for radiators that have an extended flange. Those holes on my radiator support are 28 3/4" side to side and 11" up and down.
I found a radiator that will work but it does not have the transmission oil cooler. I could go this route and just put in a different transmission cooler down the road.
My other potential option is one from Summit Racing (model SUM-382013). See below picture.
![Image](https://i.ebayimg.com/images/g/0hEAAOSwEkRkj2NT/s-l1600.jpg)
Anyone buy a radiator for their six cylinder truck lately or have suggestions? Thanks