Take a look at the 35 PU pictures. I think it has a larger tank about in the position I put mine. I used a larger tank due to more water volume in my heads and I mounted it back on the firewall. After the initial "equalization" burp and vent I have run this on 90 degree days with plenty of static idling time with no "wet spots" . Glycol has more shrink and swell than plain water and running a little hotter requires more volume. Running the fan off the radiator temperature and keeping it below 175 helps also. I don't care if you want the engine at 210. Do that with the engine thermostat and sense the EFI off the manifold, but keep the radiator temp lower and half the volume issue is conquered.