How difficult is this for someone with limited metalworking experience?
Documented on the Ford Mustang build
Published February 26, 2026
This project ranges from intermediate to advanced because it requires accurate cutting, metal shaping, and welding.
Full Answer
This project ranges from intermediate to advanced because it requires accurate cutting, metal shaping, and welding. Beginners can participate in prep, fitting, and sealing steps, but welding and shaping require practice or professional help.
Documented In This Build
Related Knowledge
How much extra tire/wheel clearance can I expect?Do I need a welder to do this, or can I rivet the tubs in?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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