Take a look at a time lapse of a Duramax Conversion Marathon on a 1988 M998 HMMWV. During a Marathon Conversion, a team is dedicated to your hummer and over the course of 2 days(weekend) the conversion is completed. The next step would be additional options and testing . The Marathon Conversion is perfect for customers who need their hummer back quicker than our standard conversion will allow. Contact Predator’s Sale Team for more details!