We’re in the process of building a ground-up racecar based on an E46 sedan.
Some pics of the progress in weight-saving:
We start out with a good condition 4-door shell and remove… well… everything, including the roof panel. For two reasons, weight saving by using a carbon skin and to be able to weld the top of the rollcage from the outside.
^ Drilling out all the spotwelds in a time-consuming and precise business.
4130 ChroMoly cage welded
Engine will grant at least 450hp. Very light and strong Enkei wheels with dual valves in 10×18 all around.