Why wouldnt you progress down that path, there is only so far you can go with cars weighing 3800lbs+ before you hit a brick wall. Someone will find the horsepower limit of these motors where they become unreliable, so the next logical step is to start chasing weight out of them. The IRS setup I cant see going a hell of alot quicker either, its messed with our heads many a time now trying to get my car down the track and with most now going to a 9" with 4 link nobody will develop them further unless one person has the coin to pay for R&D. I know I will be going down the serious drag car setup when funds permit and I get left further behind the benchmark. Looking forward to seeing these cars racing in the Pro Compact and Turbo ranks taking it to the rotaries and 2J's SPIRO