Earlier this year, Hennessey had rolled out the GMC Sierra Denali Goliath 700. The truck came with 700 horses under the hood and transformed the simple Sierra into a magnificent beast. Now, the company has teamed up with Harley-Davidson to roll out another edition based on Goliath. This one features no less than 65 Harley-Davidson specific components in and out. As for the performance, it continues to churn out over 700 horses. As the team says in the video, is this the Harley for a rainy day?