I have just two things to say....
WAHHH, Toyota Fans!!!
Here is a concept that some of you need to desperately try to grasp - OF COURSE there is going to be a bigger deal made if Toyota is dominating. They are still a FOREIGN manufacturer, I don't care if a few of their vehicles are ASSEMBLED (NOT made) in the USA. The MAJORITY of NASCAR fans (read core demographic) are blue-collar, hard working Americans from the south. Sorry, it's true, and yes, I am aware that NASCAR's fan base is widening and reaching outside of the south nowadays. As such, these people are not ready to watch a JAPANESE company come in and destroy their once All-American sport.
Another point to remember here - the Toyota engines ARE built to different specs than the Chevy, Ford, and Dodge motors. They have a larger bore size (piston) than the American motors. THAT is what NASCAR is trying to even out here. The Toyota motors (actually ALL motors running a certain bore size and above) are being forced to run a different tapered carb spacer (restrictor plate) because of the way that the engines are made. If GM is allowed to switch from the current SB2 motor used in the Nationwide Series to the new RO-7 motor like what is used in Cup competition, they would also have to use this same plate as Toyota because of the way the RO-7 motor is made.
Hope all of that makes some sense....
Here's a clip from an article that talks about the new rules just a little:
The bulletin technically amended the NASCAR Nationwide Series Rule Book section 20A - 5.10.4 effective July 23, 2008. The new language reads, "At all Events, unless otherwise specified, all engines with a cylinder bore spacing less than 4.470 inches must compete using a tapered spacer with four (4) 1.125-inch diameter holes.
"At all Events, unless otherwise specified, all engines with a cylinder bore spacing of 4.470 inches or more (the Toyotas) must compete using a tapered spacer with four (4) 1.100-inch diameter holes. Unless otherwise authorized, the carburetor restrictor will be issued by NASCAR."