2002 Silverado Rear speakers

[Saddle horse]

Ok from what I can tell the small back doors have 4x6 speakers and I have a nice set of 5.25 infinity speakers sitting around I would like to put in their place . Any ideas and pics of how I can do this ? Gonna be tight

[02suburbanZ71]

Are they the same size? If not it will NOT work

[Saddle horse]

Yes they make a adapter plate but didn't want to order them and have to wait on shipping . I found on another site the template to make some from sheet metal . Thanks anyways