Dude their is an entire thread devoted to this very subject. Read from about page 150 until the end.. if you are serious about doing this you must read it all. It will save you money and headaches.... and great advice.
Electric 1/8th Scale conversion kits.
is another great source check out the FAQ section.
This car was dialed all weekend long. (an no I don't race it but it looked really good)
We had a big trophy race this weekend and we had 8-10 electric 1/8 scales racing out of 60 entries and I only see this getting bigger.