Too bad can't be as bad as my problem. Ford dealer installed roushcharger. Same as the 427r anyhow they didn't use loctite on sever screws on the inside of the intake. One came loose and was swallowed into a cylinder. I just forked out $15,000.00 for a fully forged, ballanced & blueprinted engine block. Couldn't reuse my old block so I have been waiting for 6 months to get her back on the road. But best of luck to you!