Hi!
I'm going to replace the head gasket on my Deville.
I cant find the bolt torque values anywhere except for this post:

'GM has revised the head bolt torque values and tightening procedure as follows:
[ol][*]In sequence, torque all bolts to 30 ft.-lbs.[*][*]In sequence, rotate all bolts an additional 70°.[*][*]In sequence, rotate all bolts an additional 60°.[*][*]In sequence, rotate all bolts another 60°.[*][*]Torque the front three M6 head bolts to 106 in.-lbs.[*]
[/ol] Because the Northstar V8s are aluminum, thread damage is not unusual. GM's recommended thread repair kit is J42385-500 for main and head bolts, and J42385-2000 for other fasteners.'

Is this al the info I need? I'm not to experienced with replacing a head gasket so I would really appreciate a little help
Also, while working on the engine this time would anyone recommend any upgrades to the engine to improve its lifespan?
Thanks,
Hugo