New to Eclipse Family

Hey, just traded in me nissan sentra SPEC-V for a 2001 eclipse.  I have some of my audio stuff laying around form the sentra and want to put it in the elcipse.  Can anyone tell me the speaker size and location of them?  Also, i need the specs on the stock infinity HU.  Does it have outs on it?  Or anything else that you guys think i will need to know.  All my components are 6.5"  so hopefully i can use them in the car, but i know nothing about the system in there.  Eventually i will need disassembly info to wire my new system.  Also, is there another forum that is more setup with more car audio users? 

Thanks for your input