I read a post on the OLD Bub’s Forum. I think he was KSP.
He had Samson, SE-1, and the D&D’s.
He Drag Races and had evaluated them all. I remember he said the D&D’s were Very Loud.
He also said that he had a Power Commander along with the SE-1 ECM up-grade and the SE Air Cleaner. The most interesting statement was; “Nothing ran better than the QUIET Stock Pipes.
His next test was a modified stock set. He hasn’t posted since.