after reading and researching all the info you good folks put on here..i got the pioneer avh-p4200 and installed it yesterday..quick review..the install was'nt bad..spent 1 and1/2 hours wiring up the harness to the pac c2r-frd1 i recieved from crutchfield[bought all the stuff thru them..great company]the harness iincludes the relay for the turn on pop..did the bypass install and spent another hour installing in place of the shaker 500.I had earlier installed the shelby amp- speaker system...still all just plug and play..this thing sounds amazing..really woke up the speakers..being able to x-over the door subs makes a huge difference..the ipod interface is very cool ..i can read the damn thing now[lol]..just thought i'd share..very good upgrade..by the way..i'm 64 and not to mechcanically inclined..so if i did it..it's a breeze for someone else