Hello Elchgemeinde! would like to put a Helix HXA400 Esprit in the trunk, but the left side part seemed to me as optimal (compared to the series Subwoofer) Here I imagined to bend a sheet metal in the shop, on which I can then screw the final stage on it. My question would be now, because everything in the trunk is covered with fabric. How I could make the sheet metal there best without much effort… Can I fold the cover material straight away, so that I can get down to the sheet metal !? Would it be possible to make it so that not too much of the original is damaged or that it could be rebuilt afterwards.