Description: All systems are upgradeable and interchangeable. Pulltarps allows you to start with the "basic system" and upgrade if the need arises. All spring roller assemblies are of the same high quality and have the same NO BS guarantee. All Electric Tarping Systems, Pulltarp, Arm and Bow Systems, use the same Superwinch motor and carries a prorated three year manufacturer's warranty. All manual systems are easily converted to electric. You can even use Pulltarps upgrades on their competitors systems. All Systems are custom made for that application, from Dump Trucks to Trailers.