Hi fella I did a conversion not long ago to a translift bendi same idea two wheel drive just wheels driving at rear instead of front we bought a complete system from sevcon they can be found on the internet just get in touch tell them what you want it to do give them your motor specs and hey presto one complete unit just an on off contactor then the rest is all in the box. Also quite cheap to replace if they go wrong. However they seem quite reliable.