Are your running aluminum or steel wheels now? You can give the guys over at Marsh Racing Wheels a call. They don't list it on their site, but I'm sure they can make you a beadlock kit. I took a set of 15x12 aluminum wheels and added on their weld on beadlock kit/ turned them into a 15x14 set after it was all done. Here are some before and after pic's of what I went with:
Before:
The Kit:
Pre-weld:
And final:
Before:

The Kit:

Pre-weld:

And final:
