yeah, Hi Slow, looks like the old Toki type CRF kyosho will be discontinued as stefan says, and possibly Picco will make the engine for Kyosho. Hold your horses just for now.
the old CRF had major issues with the plastic collet of the carby comming loose and requiring the user to take it out, and re glue a new one with jb weld.
also the tune on the engines is harder to find than a standard style engine.
the engine has great top speed, but i'd go with a Nova personally. The Picco CRF (if picco does make it that is) might be a screamer though
if the JL red dot is a guide, so keep an eye out.
also the CRF is rather top heavy so, on a high bite track, it might cause a bit of issues. It's about 8 grams+ (i think) heavier than a standard engine (which is 220grams)