Guys, out of curiosity, what's the max boost this engine will take without going to head studs or copper head gaskets or other exotic parts?

Thanks!

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250