On my 95' one of the other owners put in an aftermarket unit. I would prefer factory and the current aftermarket one doesn't work at all. I see my door has infinity written on the speaker grills. What should interchange with mine and what does it look like so I can look on ebay.

If as a last resort I cannot find a factory one, is there all that external amp stuff associated with the infinity that needs rewired in order for the aftermarkets to work? I know my Lincoln has all that crap at it cost a fortune for an after market system being that had to bypass all of it.