My Kenwood radio-cd decided to call it a day after more than 10 years of loyal service. As a replacement, I would prefer a factory double din unit from the era(late 90s and early 00s). I'm not fussy about features; as I did in other things on the car, I want to upgrade using oem items as far as possible. Do all double din units(which are not 'built in' the facade) fit? While at it, I bought a factory parcel shelf and would like a set of on-shelf speakers so I wouldn't ruin it. Had in mind carrozzeria speakers(since they were factory options on japanese cars of the era), but they are quite expensive if and when you find a pair.