Very good point!!! Anyone making horsepower claims on an engine they have for sale and not having the dyno sheet to back it up is just doing some "creative" advertising!!!! IMO a rock solid 400 horse street engine is all you will ever be able to use and still be able to afford fuel for on the street!!!!!

Farmerdick, if you want real numbers and an excellent tuneup, when your engine is all done, running, and broke in properly search out a shop with a chassis dyno and run your car on it a couple pulls and adjust the tuneup between pulls!!!! Yeah, it cost another couple hundred bucks, but it's also a very good way to optimize the performance you already spent all the bucks to get!!!!!