Last Monday i ordered parts for my supercharger rebuild. Me and my dad started to take apart the supercharger Friday night. We got the parts Saturday morning. Along with my air filter for my CAI. We're just about done with the supercharger rebuild, just need to put everything back together, and so im getting started on designing the CAI/ heatshiel. I'm using clear acrylic sheet for the heat shield like Bill'*. What should i use to cut the acrylic sheet? What should i use to cut the intake pipe($40 one from Autozone)? Please let me know soon.

A 28 tooth per inch blade will make a nice clean cut, put masking tape on the base of the jig saw so you dont scratch the plexi up while cutting.
Mark the tube with a piece of wrapped paper, once the paper is wrapped around the pipe you should have a straight cut, again a jig saw or sawsall will work. A hack saw might do it but it will be hard to keep the cut straight.

I used a table saw and a compound miter saw to cut the acrylic. Leaving the protecive plastic membrane on it is a good idea until you're all done. If you have carbide-tipped blades, your table saw or compound miter saw can also cut the aluminum pipe and the aluminum bracketry for the CAI.