I'd suggest that ALL rebuilds be checked before
installation, not just AVP.  My '81 aircooled has
an engine from an east coast rebuilder and it
had some through-bolts that were not torqued
properly and later the heads act as if they are not
torqued.  It leaks coolant when warming up, but
that coolant isn't an issue.  ;-)

I would check all the engine and head bolts before
putting an engine in.  It would be worth the
small extra cost compared to later.  (The aircooled
has all that tin in the way after installation.)

                        Richard A Jones
                        Boulder, Colorado