All the 2.8L engine parts will need to be
transfered to the 3.4L. If it already had
the starter on it, then that work for
drilling new bolt holes was done. You will
need to have the broken bolt fixed I believe.
The starter is a heavy part and subject to
the bumps/vibrations. If it is not held on
good you will be breaking starters and worst.
Maybe should go after UPS for apparently
droping it (if that's what happened). I'm
a bit curious that you bought a crate engine
from someone and the starter work had already
been done? The crate engine needs new
mounting bolt holes drilled to mount the
starter in the correct spot.
Anyway, You need a fuel pressure regulator,
Maybe an adaptor for the oil pressure sending
unit, if A/C - a modified engine mount. The
oil pump is larger so the oil pressure will
not read correctly on the dash meter.
Everything else is the same as the 2.8L.
There are 3.4L mod kits that you can get.
Some people go with a chip in place of the
FPR.