if you want an s4, just buy one. but, if you want to build something to be proud of, why not try from scratch? http://www.caranddriver.com/features...homemades.html

i've never been a huge fan of the body style, but the guy that did his car's front end with an english wheel really did a great job especially for his first time. and his was a crappy little wore out bmw engine. throw a 1.8t in that thing i bet it would be impressive.

 

nah i don't really wanna build a super seven track kind of car. this would still be a daily driver.