Originally Posted by jjrider

THE newer 660 bikes are single carbs, which you can get a Grizzly 600 intake that reduces the two carb designed head into a single carb, but then you run into room with the shock. A person would need to have an offset intake so the carb sits a little crooked then the airbox boot could get to it.
I recently bid on but lost, a Raptor 700 EFI throttle body and harness, that would be a good one, especially with the 660 bottom, it has a few more sensor the efi uses. A person can sometimes get the whole system for $350-$400, maybe next year once I have all my projects settled in and get bored again

That secondary jet adaptor would be a good idea, but if these 350 or 225 jets do indeed fit it will provide many of the options one would need then. I wonder if the adjustable needles or the entire secondary slide would fit from there, if it has an adjustable needle.

I also bought a set of four Mikuni's from a Kawi street bike that are 32mm (IIRC), I got them for $45, will need to fab some throttle connections and mounts though. The Raptor carbs fit right on except the snout is another 4mm bigger dia. so the boots need to be ground bigger id or the carbs need to be machined smaller od. That's one of my biggest holdups, I've been trying to find another model/brand that has boots to fit the carbs and can be easily modded or bolt right up to the head. I hate to cut up $80 boots.