An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
The only negative I have ever seen with crossovers comes when you are trying to diagnose issues from one bank to the other. A "X" shaped cross over could make locating an issue based on exhaust pulse more difficult. A regular crossover with two tees and a crossover pipe would be fine for diagnosing. But other than that I can not think of anything. Equalizing the exhaust is a great idea to maximize power between banks.