Well I'm not sure what we can tell you here then. Cause since none of us work for O.S., all we can give you is our experience with it.

I've owned both the standard and the R-spec, and I can see the difference. Those who raced with me last year can see the difference. Thats the best I can tell you.

What I don't get is that if there are so many questions in mind about the validity of O.S.'s 'improvement' claims, why even consider the R-spec.

From what you discribed, you already have some pretty quality powerplants at your disposal, I don't know if the R-Spec can surpass what you already have.

Especially if you have moded engines...

I'm not telling anyone to buy anything and I'm CERTAINLY not trying to justify my own purchase.(That speed and powah...for that price justifies my purchase) I'm no O.S. sales rep. Several people asked for my personal report about the engine and I gave it. Thats it...

The key line in that entire post was...