Do I need a welder to do this, or can I rivet the tubs in?
Documented on the Ford Mustang build
Published February 26, 2026
Welding provides the strongest, most permanent result and maintains structural integrity.
Full Answer
Welding provides the strongest, most permanent result and maintains structural integrity. Rivets or screws can be used for a less permanent or simpler installation, but they may require seam sealer and will not be as durable as welds.
Documented In This Build
Related Knowledge
How much extra tire/wheel clearance can I expect?How difficult is this for someone with limited metalworking experience?Will this change how the suspension or alignment behaves?How do I prevent warping when welding thin sheet metal?What wheel/tire sizes can this modification accommodate?How much wheel/tire clearance should I leave when shaping the fender well?How long does a project like this typically take?What welding technique is recommended?
Related Parts
Seam sealer
$12
Sheet steel (20-18 gauge) for wheel tubs and patches
$60
Aftermarket wheel tubs / inner fender tubs (or pre-formed tub panels)
$300
MIG welding wire (ER70S-6, 0.030")
$25
Body filler (Bondo or equivalent)
$20
Primer (etching/epoxy primer)
$30
Rivets / self-tapping sheet metal screws
$10
Related Tools
MIG welder
Angle grinder with cutoff and flap discs
Sheet metal hammer and dolly set
Metal shears / nibbler / plasma cutter (one or more cutting tools)
Drill and spot weld cutter / grinder attachments
Clamps and sheet metal stakes
Sanding blocks and various grit sandpaper
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