My 408 with hand ported -1's made 530 at the tires and ran 6.30's @ 107 in a 3250 lb dart on motor. I also have a 418" pump gas motor with mildly hand ported -1's in a 3390lb Scamp and it went a best so far of a 6.55 @ 103 1/8th and a 10.37 @ 128 1/4 on that same pass. Motor is around 9.5 to 1 and runs on pump 93. It made 485 at the tires on a dynojet on motor. I have since gone to a set of 245 cnc raised ports I got from Ryan J for my 408. Im gonna dyno it once I get it back together and see if it makes any more power. Its now a 410" motor which is a little small for those heads but I have 2 systems on this car and run in a heads up class and its a pretty max effort type car. True stock suspension with 28x10.5s (motor is in a 86 mustang coupe with a glide) Ive been 5.50 @ 127 on a 225 (first stage) and just by bumping the 2nd kit went 132mph in the 1/8th. Car weighs 2950 with me in it and should go some 5.20's now on the sauce. Ran 6.19 @ 111 on motor before. Hoping for 5.90's now. We'll see.