Whats the best fitting headunit that can fit in there. the space looks alittle bigger than normal cars and looks like it can fit a 1.5 din cd player?

 

I don't think you'll be able to get any after-market unit in without an adapter. The stock head unit is huge! I assume you can buy one(adapter), but I machined one myself out of aluminum and bloted it all in. Quick and easy and it matched the 'chrome' cover we have for the console.