Both rocker panels on my '05 are gone, along with the
bubbling hood and tailgate around license enclosure,
both aluminum panels that Ford won't own up to.
The good thing is the way the rocker panels are
parallel to the ground, so looking at the truck from
the side view, you can't see that they're gone. If it wasn't
for the bubbling aluminum panels, my truck would look
mint.
I'm going to grind away the remaining part of the rocker panel. I can get slightly thicker gauge sheetmetal from a local supplier to weld in. I have a small sheet metal brake
to form the edges. There's not much physical change
between 2nd and 3rd gen expy's, so maybe these would
work:
http://www.ebay.com/itm/232004375176? redirect=mobile
They might have direct fit for your '2008.
Either way, cutting old ones out and welding new metal
in best way to go. Then Ziebart through access holes.
If your rockers are gone, check your radiator support,
most likely that's on it's way out too.
Other tip is to cover the chassis and undercarraige
with Por15. Expensive stuff @ over $150 a gallon and time consuming, which is why I haven't gotten to it yet, but worth it if you love
your truck and live in the snow belt.
Stephen