Hey heres a link
http://www.autozone.com/servlet/UiBr...3d800e5850.jsp
Scroll down toward the bottom of the page it has the 3.3 listed with pics and all.
On the upper part of the page, to the right is more links and direction on how to Relieve the fuel pressure.
You will need to read through it, it tells you want you'll need to replace like the O rings and not to get the connectors to wet with cleaners. soak the injectors and use something like an old tooth brush.
PROTECT YOUR EYES! Wear Safty glasses!
Also You should be able to buy a rebuild kit for the injectors, it'll come with the O rings and new tips for the injectors.