Suits LS1 models after 2004 with equal length head bolts only
Must Have 2MA on Rear Of Cylinder Head
 
Includes the following:
Head Bolt (M8 x 1.25 x 45) x 10 x Short Bolts
Head Bolt (M11 x 2.00 x100) x 20 x Long Bolts

Suits the series two 5.7L LS1 Engines, does not suit the earlier 5.7L or 6.0l + 6.2l LS engines as the head gaskets change.