CajunKenny;1303090 said:Both!
You're talking about the weakest link in the 7M here! It's not a matter of if you'll get a BHG...it's a matter of when! Knowing all you can know about the rebuild is the key. ESPECIALLY, when it comes to the Head Bolts and Head Gasket.
If the rebuild was done right with the right parts, you may just very well dodge that BHG bullet.
really?
It is not "when". It is when you up the power and not address anything else.