Try RS components, Farnell or Tandy (if you have these), Alltronics or Jaycar. They sell the stuff, not sure if in small or large quantities. There is also the permanent Loctite stuff but that is extremely expensive and it is permanent cement (the stuff they use to glue heatsinks to microchips in computers, etc.). Forgot the number, but it's easy to find.
Team Greasy Weasel
The best upgrade to any car is some driver skill.