Originally posted by InitialD
I believe for new 3 port Novarossi engines, they are also pre-modded with fangs...
Besides, I'm pretty sure Ed is not referring to mods on the piston sleeve. That would be the last thing he'll look at. 
Hey D. You are right, mods on sleeve means nothing beside extra cost, I guess you saw it by yourself, ah?
Just extra cost to end user.