There is actually a list. I believe it is the same as the APRA engine list. You can find that on the NMPRA website under "Racing Documents/"APRA Rules". I have no idea what happened on the AMA site. I guess it just fell through the cracks. Most of the various board members are probably not notified to review the AMA website upgrades.

In the next week or so I plan to make this information available on the NMPRA website and when ever possible link to the AMA site official information.

If there are other requests about official racing information please feel free to request it on the NMPRA website as I don't always check in here.

SD