My eddies were ported by Dr J. They flow a tad over 300 @ 600. They took my 410 with 11.8 compression and E85 to 10.53@125.6 full exhaust and factory hydraulic roller set up with a race weight of 3500 lbs. Dynoed 583 on a 850/ 596 on a dominator.
I'd like to know if anyone is running hughes big mouth heads? They do have a offset intake, but factory exhaust ports. His website makes some pretty impressive claims.