E46 M3 HG replacement what else to do with this job?

[Mark300zx]

Looks like my head gasket is kapput!!!

So while the head is off is there anything that is advisable to be done at the same time?

[e46m3Mark]

ARP head bolts? Obviously have the head checked and maybe replace the top timing chain guide?

[Gouki]

I had my HG done, also went for shells but the timing chain was really required. Shells came out looking like new after 130k miles.

You'll be surprised at the performance gain once your HG is fixed.