Well, I think testing should involve issues that will limit any major expense of a rule change. It makes sense to start with tires, wheel width, compound and possibly even offset. A weight rule could even be considered. Obviously, the owners with Esslinger engines don't want to be penalized for buying an engine that has been made legal originally by USAC. At this point there needs to be some kind of embellishment, IMO, for all the engines/cars that have been rendered uncompetitive. By an embellishment I mean some "gimmies" for the non Esllinger owners similar to what has been done regarding the rules for the midget Rumble Series.