Let's try this. Here is a youtube link to show whats going on. The jetting is off or the carburetor is screwy or ignition. I have no clue. Can the fe experts watch and advise? Car seems weak on the top end....
https://youtu.be/UM4mDGSjqBM
I can post a longer video tomorrow...but this thing is supposed to be 550hp and doesnt look like it...lol