27.5 Hub motor kit

[dbar]

After riding my Oxy drive kitted bike a friend has decided to convert his Voodoo Bantu to a hub drive.
I order a kit from Oxy drive but even though they have the 27.5 kit on their web site they have non and won't be getting any for some time.
Does anyone have any suggestions for a similar plug and play kit that uses a cassette motor?
Rider is about 15 stone and is looking for a 20ish mph top speed.

 

[Deleted member 4366]

Q128c from BMSbattery and their 11.6v 48v dolphin 09 battery with included 20 amp sine wave controller. It's faster, more powerful, quieter and has a better control system that the Oxydrive one.

 

[Woosh]

I have rear BPM on 27.5 inch rims if you need it.
http://wooshbikes.co.uk/?hubkits

 

[dbar]

Gone for Q128c. will be getting a battery and wheel build in UK.