Yesterday, I fitted a carb kit to the yellow GT, other than this and a non standard exhaust, the engine is standard.
The green GT has a non standard exhaust, carb kit, cams and I shortened the cylinder barrel for improved squish band efficiency and a slight hike in compression.
You can see the difference between the two in the videos. Both machines get worked hardest near the end of the run, if you want to see the almost flat out stuff.
Hope you like the videos - I liked making them !
B.W.
https://youtu.be/v2239Fgl48shttps://youtu.be/iO00SldM1J4