Grab a Castle 4600kv motor (or similar motor that with allow 3S), 88/16 gearing (for starters), extra long strip of road, possibly some lead weight, wheely bar, and don't forget an infrared thermometer. Tires...grab the cheapest ones you can find, 'cause running 50mph on asphalt, while trying to turn, will eat rubber all day long until you aint got no more.
Personally, I wouldn't go over 3000kv with a 3S pack.
Good luck, and get it on video
!