[D.Johns]

It wouldn't surprise me about NHRA having the wrong numbers. They had goofed up on a few things on the 2013s in the guide that were incorrect. Jesse had to contact them to get those items corrected. That is the unfortunate part of adding a new car to a guide(new or old combo). It usually takes a little bit to get it straightened out.

The heads that the 2013 CJ uses are the stock 2012-2013 Boss 302 heads which are a different casting number then the standard 2011-2013 GT heads because it uses different grade of aluminum and a few other differences. The only place to get the heads is off a wrecked car or buy from an Ford Racing Performance Parts dealer for either of the heads. The 2012 5.0 Cobra Jet used the standard GT heads.

Maybe Ford did a revision to the heads and there by creating a different casting number on the later Boss 302 heads and the information wasn't transferred to Ford Racing/NHRA or the NHRA simply goofed up when putting it into the guide(which has happened on multiple occasions). There has been people get bounced for part infractions that were 100% has the car was delivered which really is a tough situation.