If you provide the VIN or chassis number I may be able to dig up some details on it - if it's a 17 character VIN, the first few characters will identify the country & factory where it was built.
The "coily' or coil sprung Samurai/Sierra are generally looked upon as inferior to the leaf sprung versions, mainly because the suspension is perceived to be more restrictive in terms of flex or articulation in off road situations, there are other quirks that many feel make them less desirable, but the only reason I can see why someone would convert one end and not the other is out of necessity, perhaps they were unable to get the parts required for a repair.
Whether or not it's going to be worth restoring to the original configuration - or - even going the other way and completing the conversion is going to be a bit of a personal decision - are the parts readily available, what is it going to cost you, and last but not least, how do you plan to use the vehicle?
Parts that can be easily shipped to Belize - first I believe few of us will know how easy or difficult it is to ship anything to Belize, or even from which country it might be easiest, although I suspect a US source might be your preference - you need to bear in mind that the US market never got the model you have, and that parts may be different.
My goto place in the US for Suzuki stuff is Low Range Off Road, and you can also try HWY 83 Salvage, if you know what parts you need you can try RockAuto for generic stuff, and then there are japanese spares specialists like megazip.net and amayama.com.