O shit i can really help you on this,i own a 95 myself,3.8's are crap but its a nice size van.

Anyways those grills do pop up and then theres 4 7 mm screws holding the 4x6's in place now the rears are some 6/1/2's or isit 5/1/2 but either will work

but yeah those grills pop right off,get your self a panel poper

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2001 Chevrolet Cavalier
www.cardomain.com/id/black_z24_14

2003 GMC JIMMY SLS
www.cardomain.com/Id/Jimmys4life