1999 v6 oem stereo?

Or, if you don't want to hack about, you can get a fill-in panel and put a single DIN unit in. I've got a C2 with the 6006E in it and I'm quite pleased with it. It's the one with the 6 disc changed built in to the head unit itself rather than being a separate unit in the boot. Rumour has it that it doesn't get on well with non-original CDs (i.e. CD-R) so I haven't tried it just in case.
 
Thanks for the advice guys, i think i will get a 6006e unit when funds allow. Gotta sort the rear dampers first and brakes and the heater but i tell you what; the engine sounds sweet. Gotta love the cougar.