Just had a quick look in the for sale section and there is someone selling a full electric setup apparently new in box.
I'm not sure on the speedo but do some research and if it is a Hobbywing v3.1 rebadged then it's a decent speedo, the HPI 8.5 motor approx £50 new will be spot on and the savox speedo approx £45 new
I'm not sure who the seller is Plasmag, but ask on here and you will get feedback on them.
Here's a link to the sale items, good luck and I hope you figure it all out, any questions just ask
http://www.oople.com/forums/showthread.php?t=154408