NEED SOME HELP - sway bar bushings

[tylertlc]

so i was installing some new sway bar bushings, and i went to torque the last bolt (way from the firewall thank god) and it stripped out on me.

i was wondering if any of you guys have and suggestions to fix this? I was thinking of drilling a hole all the way through and getting a longer bolt and secure it that way. If anyone else has a better method of fixing this i would love to know!