| The factory trailing arm crossmember
in 1963-72 Chevy/GMC trucks is
a stout piece that does its
job well for stock applications. On
airbagged trucks or those
that are lowered 5 inches or
more, the driveshaft
becomes dangerously close
to rubbing on the top of the
hoop. The stock crossmember
also hangs down nearly
3 inches past the bottom of
the frame. On a severely
lowered truck, the exhaust
routing also becomes an
issue. This is where the driveshaft
was currently riding
with max air in the airbags. |