Ford Territory SX SY Barra 4.0L 2004 Onwards. Ford Falcon BA, BA II, BF, FG, FG II, FGX, FGX XT, G6E, F6 Barra 4.0L 2002 Onwards. 5 pcs x M8 Studs & Nuts (Turbo to Dump Pipe). Turbo Pros high tensile stud and nut kit is manufactured from high tensile steel, these studs have a higher yield strength and tensile strength than regular mild steel grade.