I fixed some errors in shape of the car, especially the rear part. Here are some screens of details that I'm working on. Axles and suspension, drive shaft, chassis and cage, made from bars. I really don't know anything about cars, but I'm trying to model all this things as close as possible.
I copied the references, but I soon became very frustrated as I do not understand how all these things work. It is much easier to model something, when you know what is the practical application of individual parts. I think I'll have to get some online manual for mechanics. Never is too late to learn something new.