Having taken my covers and pipes off about 3 times (and mine is not an
original side-pipe car), I can suggest that when installing the pipes, if
you are doing it on the ground on ramps, to support the whole pipe some-
what in place unless you have a friend who can hold it in place while you
bolt the pipe to the frame and exhaust manifold.
I like to use loc-tite when bolting the pipe to the manifold and making sure
the donut is fitting correctly without any gaps is important.
Also, if you are installing new pipes the butterfly on the heat riser may catch
as it did on mine-I decided to replace the heat riser with a spacer - saves
alot of headaches.
Make sure the pipes are not hanging down below the shield if you can before
tightening the bolts.
Good Luck