how feasible would it be to make a charge cooler using the internals from an aircon heat exchanger, then fit the compressor, the condenser and other bumph from a car with aircon. that would give the engine some really nice COLD air to play with. could the cooler matrix from one of these flow enough air to supply a 1.7 td at full revs, or would it need to be enlarged? is there any benefit from cooling the air any more than a normal water charge cooler would? would it give more than 5 bhp increase, which is what i`m told the compressor loss is?