I'm going to start in on a vintage-style Altered, based on a family member's racer from the early '60s. It ran a Super Stock-prepped FE, and he said it was rock-solid reliable for the three years he ran it (it held a national MPH record all three years) and they never had to do more than check the plugs; "and we only did that because we felt like we had to do SOMETHING between rounds!" It had the original expansion tank on it, so the engine was filled with water to absorb the heat, but there was no radiator. I've seen a lot of vintage FEDs with no water in the block, and the freeze plugs out of the block. This is a race car, with no chance of ever running anywhere other than the drag strip and in the pits. I know a lot of econo rails, super-comp cars, and even FEDs today run small radiators. If I ran a radiator, it'd be in the back, under the deck lid, and I wouldn't have a water pump on the front of the engine--I'd run a marine bilge pump to circulate the water, and maybe a small electric fan on the radiator. If I do it this way, I'll run feed and return lines to the back of each head, but then I need to figure out where to route them, etc. What are people's thought on the topic?