I finally got some track time and wanted to test out the exhaust you built for my 70 Monte Carlo. We were pleasantly and completely surprised to find out that my 1/4 mile E.T. and MPH showed NO MEASUREABLE DIFFERENCE with your full exhaust system vs. open headers. In fact, on back to back exhaust/open header runs I ran the exact same MPH.
This proves that a well designed, full exhaust system doesn’t have to hurt the performance of any car, even one in the 11’s such as mine. Plus, you can still sound great on the street.
I’m glad I followed your recommendation for the 3″ mandrel bent system with crossover and Dynomax mufflers. It has proven to be a winner.