These cylinder heads are for any twin turbo GTO / 3000GT They have been removed from my car running 506hp / 525ftlbs see dyno sheet below, the engine did not suffer any kind of coolant push or head lift.
The work was completed in 2010, I fitted brand new 3rd Gen lifters, brand new misti valve stem oil seals, Mk1 Cams, gasket matched the inlet and exhaust ports and removed the casting marks. The heads were skimmed to the smallest amount to make flat.
pictures from when the work was completed in 2010
Pictures Now after a little cleaning
£400 ono
Paul