I run one of these fan setups, with a universal northern/summit radiator. I run chevrolet style with passenger lower/drivers upper, but I'd consider a double pass if you can run both on the passenger side.

https://www.universalpartsinc.com/shopping/productDetails.aspx?i=750831&c=10328

11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.

9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.