I, like others, have my car set up for a '68 Camaro with a HPI drivers figure. If I use another body it will throw my balance and total weight off. I can show up at any race and already know that my car will weigh 1556-1561, depending on whos scales I use. I set it up at 1550, then added 1 more weight, so if I loose 1 during the race I'll still tech legal at the end. I use the same EAM 70c 5000mAh VTA battery, same body that I did for the Southern Nationals. I honestly believe that by leaving everything the same, it has actually helped me be more consistant with laptimes and setup direction.