Yes Mark from powerhouse has them on ebay as well. They are more expensive on there however becuase ebays fees have increased so much. Just shoot him a PM or go to his website
www.powerhousercperformance.com and email him. They work great and are very convienient. Engines should be pre-heated not just during break-in but always! There is no point for using it just for break-in when mechanical pinch will exist long after the first gallon(granted its a decent motor). Pre-heating a motor will increase the life of any motor drastically.