cylinder heads

2000, 3.0 Flex I had water gushing out of the radiator a few months ago so I parked the truck in hopes of selling it as is. After fielding numerous idiot offers of $500.00 I decide to fix it myself. Over last weekend I pulled both heads off, head gaskets don't appear to be blown but that does...

What are the best options for cylinder heads on a 2.3l? I have seen a couple different casting numbers that claim to be compatible, then what's the difference? Just asking for general info on which head to choose, reputable brands if anyone can recommend one