The bearings is this sett:
http://cgi.ebay.com/Kyosho-14pc-1-10...item3353d274ab
I used the sett they have for my Inferno 777 and they are of okay quality. Not any worse than sets that cost 3 times as much. olso used it on my Cyber 10B++
I have been looking for å lipo tray for the ZX-R, i think i remember reading about one. But cant find that "post" again. and am now wondering if i can make the one from the B44.1 fit.