KB-107 hypereutectic flat top pistons with 1.675 compression height and 7cc valve reliefs. Yes, magnum blocks had a shoter deck height. A 360 LA would have a 9.60 deck height, late non magnum hydraulic roller block included.
Probably use a Fel-Pro 521 SD head gasket (.055 to .060 conpressed thickness) to reach 9:1.
Fel-Pro 521SD Fel-Pro Head Gaskets | Summit Racing
