I recently installed the Fluidyne radiator in my '74 (the stock radiator was leaking like a sieve). It's AWESOME! I still have the stock fans. I'm planning on upgrading to the Flex-A-Lite (FLX-240) pushers or (FLX-220) suckers. Is there a MAJOR advantage in laying down and going with the suckers? If I keep the fans in front, Jack DeRyke had mentioned the possibility of the fans "cutting the fins like a grapefruit at speed". How do I accomplish adding the space and how much space do I need? I've read the BB topics and Chuck Melton's excellent article. I bought a two-stage electronic thermostat/relay kit with a dry probe from Pantera East that I will install to replace the stock sensor & relays.