You will never get Road racing to grow if you keep Leopard only. Its helped kill Tag class in WKA and those who follow this rule.
Run all Tag engines together. Have a Tag Sr and Tag Masters class run in same race with a 15 sec gap at start. Then have a Tag heavy race later in day at Masters weight. Can run twice a day everyone with no issues of this engine or that engine. Leave it to the sprint series to wine about the engine that best for this track ect. I just want to race with large fields!
Duel brake is what its worth, I run front brakes as I buy a shifter chassis to run Tag.