6272990 heads, open chamber, assembled, new valve job
3999289 block, 4 bolt main, Mk IV, stock bore, cooler taps, windage shield
L88 427 rotating assembly, balanced, 12.5:1, all the good parts
3933198 L88 stock Al intake, 4150 holley 850 w/ mech secondaries, heat shield, oil splash shield
Stock...