HELLO My english is very bed.I coming from slovenia (europe).I drive cadillac seville sts made 1994 vith 4.6 v8 nordhstar 32vengines this is the secound us car (frst us car is pontiac transsport 3.1 v6).The us cars is the best for me.So NowI have 57k miles and meybi i heave problem vith head gasket.How much is cost ol material for repair this engin withaut the mechanic work bechouse Iam a mechanic.Thenks for ol.