I want to replace my fan with an electric one. Anyone have a link or part number for one that would be a bolt-on replacement?

Just give them the measurements.
http://www.universalpartsinc.com/
They make nice products. The price is better than Flex-A-Lite kits and they use Spal fans. I'm going through them for my electric fans on the CHUM. Very little clearance with a Cummins behind that DMAX radiator.