Quoted from RyanStl:The frame is casted? Is that normal. Usually casted metal is frowned on. Isn't machining or stamped prefered?
Typically trucks have steel frames made from pressings or hydroforming. The old school body on frame method. Most cars today are of unibody construction, the body is also the chassis, the only "frame" part is forward of the firewall for supporting the motor and transmission and is welded to the unibody.
I have a sports care whose chassis is made of Aluminum: extrusions, stamping and castings.