I have a few thoughts on the grill aspect of this build, i wana put the stock covers back on but they need to be modified or.... the speaker hole in the box needs to be routered in 1/4 inch so the sub sits back further in the box.

i tried stuffing the fuse panel with all sorts of things and it plain rattles. I may hot glue the relay sockets into the plastic mounts to quiet them down and cover it maybee.

ill post some pics when i get going on the grill.

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BMW Level 1 Tech