no. you're confusing body with chassis. we sit on the same rolling CHASSIS as the wagon(the CE chassis) which is the fame and suspension work. but the wagon sits forward on it to give extra room in the back for its hatchback while the v6 sedan sits back on it to give room for the bigger engine. you're asking about chassis bending and replacing suspension parts and thats why i suggested the wagon, although i think all cds share pretty much the same suspension +/- a few pieces. for a fender you need to do what gallao said and hit up tsa:http://www.tasauto.com/Product/Browse.aspx?d=530&p=1
ive recently checked on a few parts stores for struts, inner\outer tie rods, sway bar links, and bushings part #'s matched both 4cyl and 6cyl. i also took my rear lower tie bar to work and its long enough to fit.