I would go forged, I have run, and am still running a Scat 4” cast crank. With thousands of passes and many thousands of street miles on the crank. It has been turned once and was still straight at that point. It has also been balanced to within 1/2 gram by someone with decades and decades of experience. Shift 6400-6500 and cross the stripe at 6900 rpm. Getting a forged crank gives you room to grow. I’m stuck trying to decide to go roller with the current short block or wait until I can build another forged short block. I’m a little over 400 hp. Runs 117.22 at 3353 lbs. If you do go cast, Scat.