... Dome Vol, 4032 alloyFlat Top,4.030''Bore, Rod lgth 6.125", Comp Ratio11.6:1, Comp. ... Dome Vol,4032 alloyFlat Top,4.065''Bore, Rod lgth 6.125", Comp Ratio11.2:1, Comp ... Dome Vol, 4032 alloyFlat Top,4.005''Bore, Rod lgth 6.125", Comp Ratio10.6:1, Comp. ... Dome Vol, 4032 alloyFlat Top,4.060''Bore, Rod lgth 6.125", Comp Ratio11.6:1, Comp. ... alloy LS (LS2 / LS3 / LS6 / L92 ) Forged Piston-Professional Flap Top-