IMHO gearing for 6200 at the stripe with a 543 and SR heads would make some sense. No need to run a combo like that above 6400 and using a tall gear to keep finishline revs down will enhance engine life a lot. A 2.45 low gear combined with a 4.10 rear and 30 inch tall tires puts a very serious load on the tire contact patch at launch. A taller rear gear or tire will help a lot and due to traction issues will probably be faster.