Will this ignition switch be compatable with a 2005 XR100?

I lost the key to my xr100 and was wondering if this would work as a replacement, also how would you install it?

http://www.ebay.com/...1226774577

The only worry is the mounting hole. Ask your dealer nearest you.

If you have the documentation proving you own the bike you should be able to purchase a key from the Honda dealer.