Okay, so this is about as 'low-brow' tech question as the come, but I'm going to swallow my pride and ask it anyway...
Is it just me or do most post-1985 cars have standardised mountings for a CD head unit? So I shouldn't have to pull out anything more hardcore than a screwdriver if I wanted to put a CD player into a 1990 lancer for example? (no it's not my car, but who am I to judge).