hello can any one tell me the going rate to do the headgaskets in a v6 vs commodore thanks
Depends on whether you only mean replace both head gaskets or do you want to include valve oil seals, skim the heads, manifold gaskets, new coolant, oil etc plus the most important bit which is whether you are doing the work or are you paying a mechanic. The only time you would just replace the gaskets is to sell the car....quick - otherwise it is normal to do all the other items. I'd also question why both headgaskets need replacing.....this indicates car may have overheated, in which case the costs go up and up. So you are really looking at anything from $100 (DIY) to over $1000 for a good shop to do a proper job.
Sorry I cannot be of more help.