One of the first questions you need to answer when building or purchasing a door slammer is what kind of chassis configuration fits my combination? It is best to answer this question regarding your current program and where you intend to go in the future with this race car. The most central chassis design feature that effects how your race car will perform is the frame rail design. Determining whether you need a Single vs. Double Frame Rail set-up will make your racing experience much easier if the design is paired correctly with your car. In this video, Tim McAmis explains the differences between a Single vs. Double Frame Rail chassis and provides a range of examples to help you narrow down which design will work best for you. Chassis Kits - http://timmcamis.com/shop/chassis/chassis-kits.html Watch tutorial videos - http://www.dragrace.academy Precision Crafted Racing Components - http://timmcamis.com The information contained in this video is based on the opinion of Tim McAmis and his 30+ years in the motorsport and manufacturing industries. Any action you take based upon the content provided shall be done at your own risk. TMRC and its affiliates are not liable for any losses and/or damages in connection with the use of this information.