I campaigned with the Banshee using rear rotor Rossi 61s and later with the Tiger Tail using George Aldrich reworked Webra Blackhead 61s (10cc).
Prior to that I flew the Kwik Fli II and the Dragon Fli Designs Using the HP 61s.
Excluding landing gear problems the Banshee was by far the fastest and grooviest while the Tiger Tail was the most forgiving. It flew like a Kaos with sexier lines.
The early seventies was the era Semco mufflers the split ess turnaround and horizon to horizon passes.