Yeah if he's wanting to lower it for drag racing it would be fine, but other than that I don't think he would want them. They will fit, just alot shorter.
Pilots may be ok, but I think you may be way rich on main and put the needle back to the 3 groove. Im running 30mm with 160 & 50 right now getting ready to lean for the warm weather, kinda give you an idea! Im at 750 asl
You're just use to your banshee!
You're not going to be racing her "are you"? ...........probably!!!
I took my buddies dads out to land between the lakes KY ran, and jumped the shit out of it, they can take a beaten.
If you want to be sure, just go ahead and port it and do all your simple inexspensive add ons....+4 timing, Noss head, reeds, good carbs, ect.... You have it apart anyway, do it right!!