Use a spot weld when replacing a new car trunk by poking holes a surface and welding them shut to establish the finish; our expert explains how in this free auto-repair video.

Weld a new car trunk floor in place, tacking it in as you go, when replacing a car trunk; learn how in this free auto-repair video.

Welding the spare tire mount is a fairly simple step in replacing a car trunk, but learn how to do it correctly in this free auto-repair video on car restoration.

Use a mig, or wire-feed welder to tack and stitch when welding a new car truck in place; learn how in this free auto-repair video.

Grind the rough edges off of a new weld on the car trunk to provide a nice finish, making the trunk look as original as possible, as our expert explains in this free auto-repair video.

Tack a filler piece in place while you patch a new car trunk; learn how with our expert's advice in this free auto-repair video.

Prepare the underside of the car for welding the fuel tank brace by grinding down a good welding surface only in the places where it needs to attach; learn how in this free auto-repair video.

Learn how to install the fuel tank support by welding it into the new trunk floor when replacing a car trunk; learn how in this free auto-repair video.