If you remember back in 1998 the Mustang Cobra was getting 305 hp. Then in 1999 they bumped it up (supposedly) to 320 hp. We were running the Cobras day and night seven days a week trying to achieve those numbers. Dearborn Dyno said they were getting the 320 hp but at Romeo we could never get more than around 300-310. There was a lot of debate on that subject and of course Romeo lost the argument. They produced the 99 and advertised 320 hp. Well some Mustang guys were getting beat by Camaros etc and were not happy. A few put their engines on Dynos and lo and behold they were not getting the advertised Hp. They now had proof and took it to court winning a lawsuit. Ford stopped production of the Cobra for 2000 MY. During that time we were testing different intake configurations,etc to get the hp numbers right and eventually were getting over 320 with tha engine. The Cobra came back in 2001 with an engine actually getting several hp more than the advertised 320hp. This is why Ford "sandbags"on the advertised hp and torque specs. Of course those of us at Romeo who were running those engines and had told Dearborn the 99 Cobras were short hp couldn't get enough of the we "told you so" which was not very popular at the time...Rest assured your 5.0, 6.2 whatever is actually making at least a few more hp than is being advertised.