Hi, I have a set of "LS6X, Stage 2" heads from a 99 LS1.
Casting #853. Includes full porting, heads, intake, exhaust and combustion chamber. New custom stainless valves, 2.02 intake, 1.57 exhaust, seals, custom dual springs, soring seats, titanium retainers, milled .030.
10k miles on the heads.
Asking $550 or reasonable offer.
More pics available if interested. Heads are located in North Plainfield, NJ.
Thanks for looking.