[V8] my timing belt

[Seamus O'Carey]

I just looked at my timing belt and it doesn't look too bad.  It looks like
it has some non-factory marks on the pulleys, so it seems safe to assume
that it's been replaced at some point.  Since the car only has 110k miles,
it should be ok for now right?  I have a pic, but I don't think I can attach
it to this message.

By the way, how do I get the air filter housing off??  I removed all the
screws, but it's still attached somewhere in back, by the firewall.  What
should I be looking for?