I bought a FIAT Uno of a mate many years ago. He told me that it had an ignition problem in the past which had been sorted with the purchase of an expensive new ignition module. Needless to say the problem was still there and I quickly realised it was carb ice. There was little that could be done except for waiting for the ice to melt.
Despite the fact there was a hot water manifold on the case of the carb, the hoses weren't fitted. I enquired about purchasing the hoses, but they weren't available in the UK.