Depends which kinda motor you want for the buggy- 540 L can sounds about right, which would be the 36/60 motors (2nd page), and choose the kv according to the voltage you will use- aiming for about 30-35,000rpms total.
http://www.bidproduct.com/part/Produ...ESC%20_31.html
Thats about the only one suitable for a car/truck- 80 amps with forwards/brake/reverse. The other boat escs have forwards and reverse, but dont mention brakes...