Tried searching but I can't find how to
 

for installation of an aftermarket head unit/1 din navi in 2004 Evo 8 with SSL. I have the mitah and metra adapters but will I need anything else for the install? tools? more harnesses? I tried searching for it but couldn't find the how to article. Can anyone post a link? How long should it take me to install? I'm thinking of the pioneer avic n4.