Step 5: Drill holes
screw 4 screws from the top deck so they go through the nuts in the trunk where the factory sub was mounted. Have them stick out about 1/4".
Then line up the wood so it is centered with the big hole. Now PRESS HARD (not HULK hard though) so the Screws Make a DENT into the wood. Now you have a perfect marking of where to drill.
Step 6: Prep-work
Sanding: you need to sand the all of the edges of the wood. ESPECIALLY THE INSIDE CIRCLE!!! You want that to have a very smooth edge on it so the Surround ring does not get damaged.
Test Fit: Put the Ring over the sub. Make sure it does not touch the edges of the Surround. If it does take the sander and shave it down a little until it is correct.
Test Fit 2: Make sure the Mount ring can fit in the space on the top deck.
Once everything is fitting correctly clean up the wood using a Air gun to get the dust out.
You can now Paint the ring if you want. I only painted the side which will show. I left the side which i will be applying the foam to UN-painted.
Step 7: Apply Foam
Make sure the top surface of the mounting ring is cleaned off.
Then apply the Foam adhesive side to the top of the mount ring (by top i mean the tip which will touch the metal rear deck of the car).
Trim off any excess.
I used 3/8" Weather Stripping. I bought a 10ft roll (Under $4 at hardware stores).
Step 8: Mounting
Screw the mounting ring into the rear deck.
Attach the sub to the Mounting ring Using wood screws. Make sure they are correct Length so they dont go through.
The screws going into the mount ring screw in from the BACK of the sub.
Step 9: TESTING
before you put the rear deck cover back on. turn on the sub on a LOW volume. Then slowly turn it up.
MAKE SURE THE SUB DOES NOT HIT THE WOOD when moving In and Out.
If it does TURN IT OFF!!! Un bolt the sub and use the sander to shave down the problem areas.
Make sure to wear Safety Glasses so none of this wood gets in your eyes.