First Geb Sub Replacement

[Jerameya]

Hey so im going on a the journey of replacing the stock sub and amp. I have already found the and amp but looking at replacing the stock sub with 8". I know the factory on is a 6.5" and I know that there is going to be some cutting involved but was looking for possible a step by step for this

 

[Jason c]

The second gen box will fit and it comes with an 8inch speaker in it. 91-94 6.5 inch and 95-98 (possibly to 2001) 8 inch and mounts the same. I have a 1993 with an 8 inch sub.

 

[toypaseo]

I modified an OEM 91-94 enclosure to fit an 8" sub.

click on image for larger view

Since it was late night, and I did not have "correct" tools, I just winged it with what I had on hand. I used a corded power drill, numerous smaller drill bits, Vice Grips, hammer, pliers...

First, I figured out how much larger I needed the enclosure opening, and marked it. Then began drilling holes along that line, as close as possible. After drilling around a few inches or so, I would break off the piece with the Vice Grips, pliers, and hammer. Drill more, break more off. I broke ALOT of smaller drill bits, since I would kinda work the drill from side to side after drilling hole through.

To smooth/even out the opening, I used curved hand files, sandpaper, and some rotary rasps in a corded power hand drill.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=4476

Note that the OEM enclosure I had has a fairly flat face. Some other OEM ones are not as flat, so getting a good seal might be an issue.