Maybe others have done better, but my experience with baffles in pipes (not mufflers) was pure aggravation. '74 Bonneville with crossover drag pipes. Spent a year or two rejetting, playing with timing, etc. and never happy with the performance. Finally got a '68 parts bike and put factory exhaust and mufflers on it. Way better. Without room for exhaust gas to expand, baffles seem to be not much better than sticking a potato in the pipe. Your experience, I hope, will be better. Bike is looking good.