Just an update: I went with an aluminum radiator for $220. A stock radiator started around $400.

There were a few very minor problems though:
1. The upper radiator hose was a bit small. I was able to get it on with alot of fussing.
2. I could not use the stock upper radiator rubber holders. The rad was a little too tall. I cut up an old rubber floor mat which worked fine here.
3. Had to get a new overflow hose as the connection on the rad was bigger. No biggy but thought I would mention it.

Overall, I am very happy with the rad. It might look a bit more stock if I paint it black but I think I will leave it the way it is. Boy does the aluminum on the radiator get hot!!

Thanks again everyone for your help. I hope this post helps someone else in the future.

1960 Chevy Apache (C10)
1965 Chevy C30 Dump Truck
1966 Chevy C30 Tow Truck