Swapped the OEM stereo (basic and tinny) for one I've had knocking around for a couple of years: a decent Clarion with four (yes, four!) speaker outputs and a CD input. Had a bit of a job running the speaker cables to the back of the van and had to bodge it a little, and I still need to sort out the memory and illumination power lines, but I'm dead chuffed that it's in. Car audio is like voodoo to me. This has removed a rate-limiting step: I can now fit the walls and speakers whenever I like; the memory and CD on the player itself can come whenever.