Now again going a little off topic. If you guys are changing P&Ls have you looked at the P&Ls that were offered by Performance Specialties?
I'm showing the FSR on the left and the Hanno on the right please note the exhaust ports and materials.

Now why this is on topic is I want you to notice the shape of the port. The FSR is an arched port. It allows the exhaust port to open and closes slowly as the piston goes up and down. This makes for a milder but very good response to the pipe. The Hanno sleeve has what is known as a more muffin shape the port is very wide at the top this only narrows towards the bottom to make room for the transfer ports. Both sleeves are mild pipe timed. But the Hanno has more area and as a result will respond to a tuned pipe better.

Also Please note the "gold" color of those sleeves. This is something you don't see much anymore. These are from the golden era of the high performance 2 cycle engine! That shiny stuff on the sides of the ports is real chrome! No nickel here!!!

Friends don't let friends fly nickel,

Konrad