I have a 1979 Dodge truck with a 360. About a month ago I took off the 1970 340 4-barrel intake and intstalled and Air Gap. No problems whatsoever with the AC brackets except I had to grind about 1/8" off 1 corner of the bracket that mounts to the driver side intake manifold bolt. No problems with radiator/heater hoses. My AC compressor is the factory RV2 however.