About to pull the head of a CA18 - and noticed the headbolts require an Allen key...10mm I believe.

Now my socket set doesn't include a Allen key bit.

I imagine I'll be able to take the head bolts out - but how to get them back in an re-torqued.

From someone who's done it before and has the benefit of hindsight...what's the best way to get this job done?

I saw this at NissnSilvia
http://www.nissansilvia.com/forums/index.php?showtopic=14997&hl=head+gasket+ca18

and this (nice pics)
http://www.davidrawlinson.org.uk/car/head_gasket_change.html?15

But they don't say what they used to reinstall head bolts.