I just ordered a set of the World Products heads that Wissota allows for the class... Next spring when everything is together we'll see how they match up in horsepower with the old 461 heads. With all the limitations on the rules, as Southerner said it is going to take some real careful build on the engines, and a lot of attention to the little things. We went to a Wissota show on Friday night, had 23 of the Super Stock cars on a very tacky track. They all appeared to be very close on horsepower and the winner and the others up front were the one's who read the track right, made the correct chassis adjustments, and had the best driver!!! I warned Greg on the way home that he gets only 2 years in one of these, then we are going to build a late model!!!! Last night was our final night in the Factory stock car, Greg got a 2nd in the heat and 3rd in the feature. We didn't even start racing till a week before mid season and wound up in the top 10 on points!!!! Not a bad year at all!!!