The NHRA Camping World Drag Racing Series heads to the Texas Motorplex for the Fall Texas Nationals, and on this week's episode of the NHRA Insider Brian Lohnes is joined by Tony Pedregon to break down what fans should expect to see, what racers need to do, and how championship hopes will be bolstered or crushed in Ennis, Texas.    The pair have a class-by-class breakdown of not only the leaders and their positions post St Louis but also of the cars and drivers on the bubble of still being in contention to feasibly win a world title. It is fascinating that Top Fuel is led by a guy who had not had a points advantage in years, Pro Stock Motorcycle is led by a veritable rookie, Pro Stock is only a six-point margin between first and second and Funny Car is a four-way battle that is just a handful of rounds between first and fourth.   The pressures, the mistakes that need to be avoided, and the advantages that need to be taken. There's no more time for friends, there is only time for the business of winning at 200 and 300+ miles per hour. A big-time race calls for some big-time takes and this show has 'em from end to end.