The intake manifold, and carter carbs were the downfall of the RO/WO cars. The cross ram worked much better on the low end vs the stock street hemi intake. The just could not get the cars to leave the starting line, that is when banzaii starts started, and ended after 727's were being scattered all over the starting lines across the country. Racers were not happy with Chrysler for giving them basically a stripped down street car, they wanted a package deal like the A990 cars, thus the LO23-BO29 cars were built.