[redfire427]

Originally Posted by P51A

Here is an e-mail I received from Roush in bold below, thanks to Gianni Mocchi that I have been dealing w/ for years. My # is 101 and did not have the work done as I previuosly was told from the dealer, so all numbers should check w/ Roush to see if it has been done, but it seems unlikely. This is the update that gave the dynojet results of 505 rwhp as opposed to 436! Major difference. Looking forward to getting it done.

To better assist you with your concern take this vehicle to your local Ford dealer and have them contact ROUSH to complete the Product Bulletin #041808-1. Which a PCM update and a tensioner update will be preformed. If you have any further questions please feel free to contact our warranty department at 1-800-59-ROUSH Option #2 . Attention Joe.

Here is a comment I posted in your other thread yesterday,

Dude, get a grip. Your car makes 510 crank horsepower just like it was engineered to. Muscle cars of old has nothing to do with high performance cars of today. If Roush markets it at 510, it makes 510. Period. I guarantee you, they are not giving you more than you paid for.
That would completely undermine their ability to boost the numbers in the future with a little tweaking. Just take a look at the progression of the Stage 3/ 427R 415hp, 420hp, 427hp, 435hp. You get the picture. What changed? Nothing but a pulley and a few strokes on the keyboard updating the tune file.

So there you go. Just like all 150 other P51's, you got your 510 crank horsepower just like everyone else. Now, Roush will start upping the ante. Hopefully they will also supply you with new vinyl graphics that say 580hp.