They would blow up. Resistors turn electrical energy into heat (ala the conservation of energy), and that heat has to be dissipated. A better solution would be to design some large copper heat sinks that would still transmit heat but be cool enough not to melt anything.What would happen if the resistors were wrapped in an insulation so that the heat they give off would not be allowed to radiate as much, then they could just be placed in the pockets where the old bulbs resided ?