Thanks Beth.

You are right about the newer restrictions being placed in F1,the high costs of R&D is one of the factors.Last year,teams like Mclaren-Mercedes,Renault and Ferrari spent an estimated 450million $ each ,the top teams employ more than 500 people in their factories..making it the most expensive form of motorsports,and unfortunately,it has been that way from a longtime.Bernie ecclestone likes to beleive that making the engines last for 2 weekends and stopping further development on the engine side is gonna cut the costs,but that is far from the truth,each year the costs increases,in the mid-90's top teams used to spend 300-350 million $ each year,its much higher now.F1 has also come under increasing criticism in the recent years for not being a great spectator sport,unlike the NASCAR ,IRL etc and being more of a technical showcase,to some extent,that is true as well,the high use of high-tech electronics,driver aids ,turbulence,grooved tires and very very high downforce are a few factors to blame.

Back to NASCAR,so what are the engine restrictions which are placed on cars competing in the BUSCH series? Is there a restriction on the number of cylinders used and the configuration speaking in general?How much do these cars weigh? Last but not the least,i had an oppurtunity to get close to a few NASCAR competition chevy's on display in washington DC auto show,the slicks on those cars very very hard, how many compounds are they allowed to use over a race weekend?