[6pack] difference in front vs. rear wheel studs (TR6)?

[lee at automate-it.com]

I'm moving from wires back to disk wheels. I've removed the shortened 
studs from the hubs, and have new rear studs. I do not currently have 
the front studs - but I have plenty of the ones for the rear. How 
different are these - i.e. can I use the extra rear studs up front? I 
can't find dimensions on these anywhere.

Thanks!
  Lee