About the same time, and I carry an umbrella so wouldn't get wet at all. I use the 8-pin HEI module on my Valiant. 2 mounting screws to the heat sink, two Weather-pack connectors and one 2-pin connnector. You don't need to unscrew the connectors like the Mopar one, so about the same time. The HEI module is 4x smaller so takes less space in the glove compartment. I also don't have to worry about a broken ballast resistor (common failure).