What size?? im making 5 1/4 s and tweeter kicks and putting my 6 1/2 s in the door, here is the link for my 5 1/4 alpine components if your wanting to compares the size but I know they will fit, just have to modify the factory moldings for it to fit along with fiberglassing and covering w/carpet
http://www.onlinecarstereo.com/caraudio/product.asp?sku=11123
