WHat size stock speakers do I have in my 88 thunderbird?. I wanna replace, but don't know the sizes......6x9's what?.
In the rear deck you should have 6x8"s and the doors should have 6 1/2" then the dash shouldh have 3 1/2" speakers. Hope that helps.
6x9s will fit in the back with a little ingenuity.
Thank you!!!!!!!!