The YJ springs are a great mod. The ride is super smooth and flex is awesome.
Unfortunately, your current missing links will not work with the YJ springs due to their extra width. If you wish though, YJ Missing Links can be built up. We are actually in production of Missing Links at this time.
The other thing to consider if you stay the Missing Link route is that the fixed end of the spring will still need to be addressed. You will have to cut, widen, move, and reweld the spring hangers themselves. If you can handle this level of modification, go for it! The YJ springs are awesome.
Another alternative is a bolt on kit for the YJ springs. We offer a front and rear bolt on system for the YJ springs. Its not cheap due to the level of fabrication.
Finally, you can fabricate your own mounting system. Remember that the springs are about 6" longer than Samurais and a 2.5" wide. Its a project that will take a bit of tinkering, but again, the results are great.
Hardcore Suzuki products for hardcore enthusiasts.