This kit includes:

Genuine Gaskets for the LS1 engine, with bolts, lifters and lifter guides/trays (Part # 12498544) Suits: Holden 5.7 LS1, Years: 97 - 06Genuine Lifters & Guides (Part # 12499225 / 12595365)Genuine GM Head Gaskets:Suits: LS1 5.7L - Years: 1997 - 2006

Head Bolts:
Suits:
Holden Commodore VT VX VU LS1 V8
Holden LS1 5.7L Engines up to 2003
05/1999-2003 Holden [VT-VX-VY Commodore]
06/1999-2003 Holden [WH-WK Statesman]
12/2000-2003 Holden [VU-VY Ute]
10/2001-2003 Holden [V2 Monaro CV8]
 
Years: 1999 - 2003 (Early Model)3 x Different Bolt Lengths (30 Total)
 
45mm x 10
110mm x 4
155mm x 16
 
Note: Must have 1MA On Rear Of Cylinder Head
Genuine LS7 Delphi Lifters, made in the USA with Gold Circlip. These are a genuine lifter, however you must soak in oil 24 hours before use. You must check preload, lifter bore etc. before install. These do not come with any warranty due to too many variables that can affect lifter install.
https://www.enginebuildermag.com/2011/06/getting-to-the-bottom-of-hydraulic-lifter-preload/ more information here.