Monte was just giving a few more examples not trying to second guess your knowledge, the Wallace calculators which I use from time to time seem to be (3%) on both sides, hp is always a bit high with et.always low with mph. In most of the super stock modified cars they never show what they should actually run according to dyno hp,if they did my car in ss/bm with a p/s truck 358 should run 8.00 to 8.10 , I never ran that with the 390". Two more cars I can think of are Scott Gove,his car is stupid fast he has been in the 7.90 zone not sure if it's a p5 or w8 and Paul Ricci with his avenger I know is a w8 and has been very close to the 7 second zone, both of those are well over 900 hp on hp. I don't have the mega cubic dollar budget to buy multiple $4000.00 torque converters ,$3500.00 headers,tires,gears,carbs etc. I know you know the drill and that what it takes.