Well its been over a year now with the 383 that they built and I cant be happier. I gave it a year to break it in and took it to the track this year and ran a 10.66 on pump gas and 10.30 on race gas. no oil leaks at all. It dynoed at 582hp but i know that it makes over 600hp now. I also run on the street and kill big blocks WHAT A BLAST thank you White performance. It would be nice to get a T-shirt so i could do a so advertising in the northeast for you