I did mine for my 03 Tahoe. The first time i taped off the factory location and made a mold where the grill goes. Then i added the rings and wrapped it. The second ones I did, i used the grille. it was alot easier this way. Just make sure u dont wrap it to tight.
These are the first ones i did. @ 6.5's and to tweeters.
I just finished these. 1 8", 1 4", and a Tweeter.