in rocker arm studs bolts on to 1987-94 mustangengines with no loss of compression ... bolt pattern accommodates large custom headers the windsor series of cylinderheads ... torque and throttle response in 5.0 engines with the jr being better suited to ... stock or slightly modified engines and the larger sr heads which have ... world s windsor-series cast iron cylinderheads provide a very cost-effective ... bolt pattern accommodates large custom headers included in base assembly manley street ... steel valves with swirlpolished heads ring band-style seals 1 2 models ... to be retained use stud mounted rockers head gaskets fel-pro #9333pt or #1011-2 or ... .0s windsor jr and windsor sr cast iron cylinderheads for small block ford 5.0 part ... -1 053040-2 description windsor jr iron head windsor jr iron head windsor jr iron ...