The CS130 series is a good fit and often used in more recent GM alternator conversions. They are (mostly) 105A rated, and more compact than most of the older generation alternators. They also have an internal fan plus the external. The CS130D
has two internal fans, but is really a different animal (mechanically); I could not find one to fit. Cooling, or the lack if it, is the primary reason alternators fail -- none are really made to provide full output continuously.
There's a lot of information around, so spend some time researching. There's more GM alternator info at: MadElectrical
although they only discuss the older 10SI and 12Si series. A lot of Zukers make these work and they're cheap at the junkyard.
I got mine as a kit from Paul at Adventure-Off-Road on eBay, and I'm pleased with both the product and service. Some of the usual Suzuki/Samurai vendors, e.g. TrailTough, sell a bracket for the GM alternator.
A word of caution, however. Some write-ups advocate removing the fusible link. In my view, this is an exceptionally bad idea. The OEM fusible link protects the vehicle wiring from an electrical fire. Adding a high-output alternator will eventually blow the fusible link unless you run a new, separate alternator-to-battery charging wire (6ga or larger) directly to the battery (+) terminal, so that the high battery charging current bypasses the fusible link (just tape off the old output wire and don't use it). You can replace the fusible link with a fuse if you must (a 40A MAXI fuse seems about right to me), but doing without any circuit protection at all is asking for trouble. One electrical fire could ruin your whole day.
Edit: I bought a new fusible link from my dealer for $8.80 and now carry a spare.