Quiet mufflers

would these fit my dart ?
I am concerned about the length

http://www.summitracing.com/parts/WLK-22790/



Brand Dynomax Performance
Manufacturer's Part Number 22790
Part Type Mufflers
Product Line Walker Quiet-Flow 3 Mufflers
Summit Racing Part Number WLK-22790
UPC 086387227902

Case Shape Oval
Inlet Diameter (in) 2.000 in.
Inlet Quantity One
Inlet Location Offset
Outlet Diameter (in) 2.000 in.
Outlet Quantity One
Outlet Location Center
Internal Construction Turbo-style
Muffler Material Steel
Muffler Finish Aluminized
Case Length (in) 22.000 in.
Overall Length (in) 26.000 in.
Thickness (in) 4.250 in.
Width (in) 9.750 in.
Quantity Sold individually.