Always thought bigger fender flares would look great on an Omni but also get function of being able to run wider tyres. Found these racing flares for a VW Rabbit think they will fit? http://www.showcars-bodyparts.com/rabbit.html
Some specs for the two cars in mention.
1983
Dodge Omni
Length: 164.8 inches 4185.91 mm
Height: 53.1 inches 1348.73 mm
Width: 65.8 inches 1671.31 mm
Wheel Base: 99.1 inches 2517.13 mm
Ground clearance: ?
Weight: 2100 lbs
Aerodynamic Drag coefficient: ?
1990
Dodge Omni
Length: 163.2 inches 4145.28 mm
Height: 53 inches 1346.20 mm
Width: 66.8 inches 1696.72 mm
Wheel Base: 99.1 inches 2517.14 mm
Ground clearance: ?
Weight: 2100 lbs 952.54398 kg
Aerodynamic Drag coefficient: ?
1980 1.6d
VW Rabbit
Length: 3950 mm 155.51 inches
Height: 1620 mm 63.77 inches
Width: 1420 mm 55.9 inches
Wheel Base: 2410 mm 94.88 inches
Ground clearance: 130 mm 5.12 inches
Weight: 870 kg 1918 lbs
Aerodynamic Drag coefficient: 0.4