Don't want to rain on the parade but make sure your heads can support the cubes. There have been a ton of disappointed guys with 500+ inch strokers. There's at least one or two a week lately. Everytime it seems they build a monster bottom end and think the same heads that worked on there stock stroke should be just fine on the new motor. Do your homework. You can easily make 600+hp with stock stroke, less cash, your heads, etc.