dude you live like 25 miles away from me, The clarion should have spots where you can stick keys in and pull the deck out, most keys should work depending on which deck they are for, pioneers works well for anything really. if you have a diff head unit the internal amp has been bypassed.
If you need any help with your soon to be system let me know, I did all of my work and am very willing to help a fellow enthusiast. (1/0 guage cable all the way, batcap 400, mtx1501d, 3 infinity kappa perfects in fiberglass enclosure)