tandmand- Remember that on the national level (Vegas, Cleveland, Novak, Snowbirds, Roar Carpet Nats) plus semi-big races where a lot of Factory Guys show up like the Halloween Classic, January Jam, etc. the numbers typically look like this:
Open Modified is-
.9 - 1 sec/ lap faster than Stock
.4-.5 sec/lap faster than 19t
Blackstock's 3rd round average was .43 sec./lap faster than Dumas 19t Factory Foam and 1.09 sec/lap faster than Dayger's average. These are pretty typical.
What often goes unnoticed is just how much faster that REALLY is
(if one is consistent per lap, notice these are the averages per lap).
A .4 -.5 sec/lap difference will typically equal about 1 lap in 5 minute racing.
This equates to 2 - 2.5 laps in 8 minute racing (a standard 12th scale race).
One lap is a lot when the difference in making the "A" can be measured anywhere from 1/4 - 3/4 of a lap and guys are used to being within a few seconds of each other.
So they aren't really running anything different motor wise than what others run. It's just that everything works at the optimum (Driving, Car, Tires, Motors, Batteries, Electronics, etc.). It ALL counts at that level, it's NOT just Driving or Motor or Tires or Whatever, it ALL counts and it ALL has to be right....and those guys get it right nearly all of the time....
With all of that said I have been hearing very good things about the Integy Atlas 19t and the Reedy Quad Magnet is pretty common along with the Trinity C2. A lot of people seem to also be waiting on the new Checkpoint 19t. I don't race stock or 19t so I can't tell you from personal experience, just from what others are saying/writing.