**Please Call for Availability and Fitment Confirmation.** LSM SC-355â„¢ on head valve spring compressor for Late Model Hemis (2003 and newer) with Drag Pack rocker bar. Tool mounts directly to the Drag Pack stands and is adjustable to accommodate intakes and exhausts. The SC-355â„¢ comes with our small retainer housing with an OD of 1.235". Our tools can easily and safely handle 1,000 pounds of seat pressure with our screw down method that will not spin back. Plus, you won't need an extra set of hands so you don't lose your keepers. Don't forget your optional SH-60 â„¢ Speed Handle!