While reinstalling the LS3, we thought it was the perfect time to add this hose relocation kit from TechAFX. On the functional side, the kit has a new fuel and EVAP line made to OEM standards. The fuel hose was tested to 150 psi and looks great. The heater hose kit really dresses up the engine bay if you're not running the big plastic engine cover. It helps ditch the ugly rubber heater hoses GM tossed on top of the LS3 and replaces them with CNC-bent and formed aluminum tubing and custom-formed, 90-degree rubber ends.