Using this Humble Rumble firewall spotweld replacement hardware kit is a breeze. First, make sure your vehicle is turned off and parked in a safe place. Then, follow the assembly instructions included in the kit. You don't need to remove your dash, which saves you a lot of time and effort. It should take you about 1 - 2 hours to finish the installation. When handling the hardware, be careful as the edges might be a bit sharp. As for maintenance, since it's made of Billet 304 Stainless Steel, it's quite resistant to corrosion. But it's still a good idea to check the spot welds periodically to make sure they're in good condition. If you notice any signs of damage, replace the hardware right away.